Description of problem:Embedded ansible fails to finish activating on fresh appliance


Version-Release number of selected component (if applicable):5.8.4.3


How reproducible:100%


Steps to Reproduce:
1.Provision appliance
2.enable embedded ansible

Actual results:
Notifications filled with 'The role Embedded Ansible has started activation on server EVM'

Expected results:
Embedded ansible role started and activated correctly

Additional info:
evm.log
--
:guid: 72f4fd56-5910-11e8-9e83-001a4a420791
[----] I, [2018-05-16T11:40:16.858034 #2455:90b104]  INFO -- : MIQ(MiqEventHandler::Runner#message_sync_config) MIQ(MiqEventHandler::Runner) Synchronizing configuration complete...
[----] E, [2018-05-16T11:40:20.135399 #2029:56353f8] ERROR -- : AwesomeSpawn: ansible-tower-setup exit code: 2
[----] E, [2018-05-16T11:40:20.135501 #2029:56353f8] ERROR -- : AwesomeSpawn: 
[----] E, [2018-05-16T11:40:20.135779 #2029:56353f8] ERROR -- : MIQ(EmbeddedAnsible.run_setup_script) EmbeddedAnsible setup script failed with: ansible-tower-setup exit code: 2
[----] I, [2018-05-16T11:40:20.144732 #2029:56353f8]  INFO -- : MIQ(AuthToken#after_authentication_changed) [MiqDatabase] [1], previously valid on: []
[----] I, [2018-05-16T11:40:20.151483 #2029:56353f8]  INFO -- : MIQ(MiqQueue.put) Message id: [1251],  id: [], Zone: [default], Role: [], Server: [], Ident: [generic], Target id: [], Instance id: [1], Task id: [], Command: [MiqDatabase.authentication_check_types], Timeout: [600], Priority: [100], State: [ready], Deliver On: [], Data: [], Args: [[:ansible_secret_key], {}]
[----] E, [2018-05-16T11:40:20.153778 #2029:56353f8] ERROR -- : [AwesomeSpawn::CommandResultError]: ansible-tower-setup exit code: 2  Method:[rescue in do_before_work_loop]
[----] E, [2018-05-16T11:40:20.153889 #2029:56353f8] ERROR -- : /opt/rh/cfme-gemset/gems/awesome_spawn-1.4.1/lib/awesome_spawn.rb:105:in `run!'
/var/www/miq/vmdb/lib/embedded_ansible.rb:111:in `block in run_setup_script'
/var/www/miq/vmdb/lib/embedded_ansible.rb:127:in `with_inventory_file'
/var/www/miq/vmdb/lib/embedded_ansible.rb:104:in `run_setup_script'
/var/www/miq/vmdb/lib/embedded_ansible.rb:61:in `start'
/var/www/miq/vmdb/app/models/embedded_ansible_worker/runner.rb:36:in `setup_ansible'
/var/www/miq/vmdb/app/models/embedded_ansible_worker/runner.rb:13:in `do_before_work_loop'
/var/www/miq/vmdb/app/models/embedded_ansible_worker/runner.rb:7:in `prepare'
/var/www/miq/vmdb/app/models/miq_worker/runner.rb:133:in `start'
/var/www/miq/vmdb/app/models/miq_worker/runner.rb:21:in `start_worker'
/var/www/miq/vmdb/app/models/embedded_ansible_worker.rb:20:in `block in start_monitor_thread'

/var/log/tower/setup
http://pastebin.test.redhat.com/592101