I'm hitting this issue attempting to deploy OSP13 with OVN as a backend using latest passed phase1 puddle:

    TASK [Start containers for step 1] *********************************************
    ok: [localhost]

    TASK [Debug output for task which failed: Start containers for step 1] *********
    fatal: [localhost]: FAILED! => {
        "changed": false,
        "failed_when_result": true,
        "outputs.stdout_lines|default([])|union(outputs.stderr_lines|default([]))": [
            "stdout: Trying to pull repository 192.168.24.1:8787/rhosp13/openstack-cinder-volume ... ",
            "2018-06-15.2: Pulling from 192.168.24.1:8787/rhosp13/openstack-cinder-volume",
            "e0f71f706c2a: Already exists",
            "121ab4741000: Already exists",
            "2824d3a8e244: Already exists",
            "f574ab7e56a4: Already exists",
            "d48a80b9272a: Already exists",
            "36a0c8e1d9d9: Pulling fs layer",
            "36a0c8e1d9d9: Verifying Checksum",
            "36a0c8e1d9d9: Download complete",
            "36a0c8e1d9d9: Pull complete",
            "Digest: sha256:3208d63a7b9efbcfdcd3e6aaf48037764548a09590f9d000a82aafe46a51e2f1",
            "Status: Downloaded newer image for 192.168.24.1:8787/rhosp13/openstack-cinder-volume:2018-06-15.2",
            "",
            "stderr: ",
            "stdout: ",
            "stdout: 6d2d7be10850597b8a6b06c56f5824397d09d9209a9ef751a0ed9f04d523c90f",
            "Error running ['docker', 'run', '--name', 'mysql_bootstrap', '--label', 'config_id=tripleo_step1', '--label', 'container_name=mysql_bootstrap', '--label', 'managed_b
y=paunch', '--label', 'config_data={\"start_order\": 1, \"image\": \"192.168.24.1:8787/rhosp13/openstack-mariadb:2018-06-15.2\", \"environment\": [\"KOLLA_CONFIG_STRATEGY=COPY_AL
WAYS\", \"KOLLA_BOOTSTRAP=True\", \"DB_MAX_TIMEOUT=60\", \"DB_CLUSTERCHECK_PASSWORD=GCd4kYCPCMTF82K3zdcycXkE6\", \"DB_ROOT_PASSWORD=dvesBgF4Jg\", \"TRIPLEO_CONFIG_HASH=0541b52d76
f205c6977f8bc68d9068bd\"], \"command\": [\"bash\", \"-ec\", \"if [ -e /var/lib/mysql/mysql ]; then exit 0; fi\\\\necho -e \\\\\"\\\\\\\\n[mysqld]\\\\\\\\nwsrep_provider=none\\\\\
" >> /etc/my.cnf\\\\nkolla_set_configs\\\\nsudo -u mysql -E kolla_extend_start\\\\nmysqld_safe --skip-networking --wsrep-on=OFF &\\\\ntimeout ${DB_MAX_TIMEOUT} /bin/bash -c \\'un
til mysqladmin -uroot -p\\\\\"${DB_ROOT_PASSWORD}\\\\\" ping 2>/dev/null; do sleep 1; done\\'\\\\nmysql -uroot -p\\\\\"${DB_ROOT_PASSWORD}\\\\\" -e \\\\\"CREATE USER \\'clusterch
eck\\'@\\'localhost\\' IDENTIFIED BY \\'${DB_CLUSTERCHECK_PASSWORD}\\';\\\\\"\\\\nmysql -uroot -p\\\\\"${DB_ROOT_PASSWORD}\\\\\" -e \\\\\"GRANT PROCESS ON *.* TO \\'clustercheck\
\'@\\'localhost\\' WITH GRANT OPTION;\\\\\"\\\\ntimeout ${DB_MAX_TIMEOUT} mysqladmin -uroot -p\\\\\"${DB_ROOT_PASSWORD}\\\\\" shutdown\"], \"user\": \"root\", \"volumes\": [\"/et
c/hosts:/etc/hosts:ro\", \"/etc/localtime:/etc/localtime:ro\", \"/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro\", \"/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/cer
ts/ca-bundle.crt:ro\", \"/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro\", \"/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro\", \"/dev/log:/dev/l
og\", \"/etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro\", \"/etc/puppet:/etc/puppet:ro\", \"/var/lib/kolla/config_files/mysql.json:/var/lib/kolla/config_files/config.json\"
, \"/var/lib/config-data/puppet-generated/mysql/:/var/lib/kolla/config_files/src:ro\", \"/var/lib/mysql:/var/lib/mysql\"], \"net\": \"host\", \"detach\": false}', '--env=KOLLA_CO
NFIG_STRATEGY=COPY_ALWAYS', '--env=KOLLA_BOOTSTRAP=True', '--env=DB_MAX_TIMEOUT=60', '--env=DB_CLUSTERCHECK_PASSWORD=GCd4kYCPCMTF82K3zdcycXkE6', '--env=DB_ROOT_PASSWORD=dvesBgF4J
g', '--env=TRIPLEO_CONFIG_HASH=0541b52d76f205c6977f8bc68d9068bd', '--net=host', '--user=root', '--volume=/etc/hosts:/etc/hosts:ro', '--volume=/etc/localtime:/etc/localtime:ro', '--volume=/etc/pki/ca-trust/extracted:/etc/pki/ca-trust/extracted:ro', '--volume=/etc/pki/tls/certs/ca-bundle.crt:/etc/pki/tls/certs/ca-bundle.crt:ro', '--volume=/etc/pki/tls/certs/ca-bundle.trust.crt:/etc/pki/tls/certs/ca-bundle.trust.crt:ro', '--volume=/etc/pki/tls/cert.pem:/etc/pki/tls/cert.pem:ro', '--volume=/dev/log:/dev/log', '--volume=/etc/ssh/ssh_known_hosts:/etc/ssh/ssh_known_hosts:ro', '--volume=/etc/puppet:/etc/puppet:ro', '--volume=/var/lib/kolla/config_files/mysql.json:/var/lib/kolla/config_files/config.json', '--volume=/var/lib/config-data/puppet-generated/mysql/:/var/lib/kolla/config_files/src:ro', '--volume=/var/lib/mysql:/var/lib/mysql', '192.168.24.1:8787/rhosp13/openstack-mariadb:2018-06-15.2', 'bash', '-ec', 'if [ -e /var/lib/mysql/mysql ]; then exit 0; fi\\necho -e \"\\\\n[mysqld]\\\\nwsrep_provider=none\" >> /etc/my.cnf\\nkolla_set_configs\\nsudo -u mysql -E kolla_extend_start\\nmysqld_safe --skip-networking --wsrep-on=OFF &\\ntimeout ${DB_MAX_TIMEOUT} /bin/bash -c \\'until mysqladmin -uroot -p\"${DB_ROOT_PASSWORD}\" ping 2>/dev/null; do sleep 1; done\\'\\nmysql -uroot -p\"${DB_ROOT_PASSWORD}\" -e \"CREATE USER \\'clustercheck\\'@\\'localhost\\' IDENTIFIED BY \\'${DB_CLUSTERCHECK_PASSWORD}\\';\"\\nmysql -uroot -p\"${DB_ROOT_PASSWORD}\" -e \"GRANT PROCESS ON *.* TO \\'clustercheck\\'@\\'localhost\\' WITH GRANT OPTION;\"\\ntimeout ${DB_MAX_TIMEOUT} mysqladmin -uroot -p\"${DB_ROOT_PASSWORD}\" shutdown']. [2]",
            "stderr: INFO:__main__:Loading config file at /var/lib/kolla/config_files/config.json",
            "INFO:__main__:Validating config file",
            "INFO:__main__:Kolla config strategy set to: COPY_ALWAYS",
            "INFO:__main__:Copying service configuration files",
            "INFO:__main__:Copying /dev/null to /etc/libqb/force-filesystem-sockets",
            "INFO:__main__:Setting permission for /etc/libqb/force-filesystem-sockets",
            "INFO:__main__:Deleting /etc/my.cnf.d/galera.cnf",
            "INFO:__main__:Copying /var/lib/kolla/config_files/src/etc/my.cnf.d/galera.cnf to /etc/my.cnf.d/galera.cnf",
            "INFO:__main__:Copying /var/lib/kolla/config_files/src/etc/sysconfig/clustercheck to /etc/sysconfig/clustercheck",
            "INFO:__main__:Deleting /etc/hosts",
            "ERROR:__main__:Unexpected error:",
            "Traceback (most recent call last):",
            "  File \"/usr/local/bin/kolla_set_configs\", line 411, in main",
            "    execute_config_strategy(config)",
            "  File \"/usr/local/bin/kolla_set_configs\", line 377, in execute_config_strategy",
            "    copy_config(config)",
            "  File \"/usr/local/bin/kolla_set_configs\", line 306, in copy_config",
            "    config_file.copy()",
            "  File \"/usr/local/bin/kolla_set_configs\", line 150, in copy",
            "    self._merge_directories(source, dest)",
            "  File \"/usr/local/bin/kolla_set_configs\", line 97, in _merge_directories",
            "    os.path.join(dest, to_copy))",
            "  File \"/usr/local/bin/kolla_set_configs\", line 99, in _merge_directories",
            "    self._copy_file(source, dest)",
            "  File \"/usr/local/bin/kolla_set_configs\", line 75, in _copy_file",
            "    self._delete_path(dest)",
            "  File \"/usr/local/bin/kolla_set_configs\", line 108, in _delete_path",
            "    os.remove(path)",
            "OSError: [Errno 16] Device or resource busy: '/etc/hosts'",
            "stdout: 31283b13088bfd5cca6f56861cc07009dbae3bdf68c4d75cc38e0d0ea60ed264"
        ]
    }