Description of problem:
Upgrade v3.10 to v3.11 without openshift_release set. Upgrade failed at TASK [openshift_examples : Create tar of OpenShift examples] *******************
task path: /usr/share/ansible/openshift-ansible/roles/openshift_examples/tasks/main.yml:23
Thursday 16 August 2018  01:53:25 +0000 (0:00:00.756)       0:29:55.250 ******* 
fatal: [x -> localhost]: FAILED! => {"changed": true, "cmd": ["tar", "-C", "/usr/share/ansible/openshift-ansible/roles/openshift_examples/files/examples/v3.10/", "-cvf", "/tmp/openshift-ansible-jw0ySYH/openshift-examples.tar", "."], "delta": "0:00:00.531924", "end": "2018-08-16 01:53:26.471971", "msg": "non-zero return code", "rc": 2, "start": "2018-08-16 01:53:25.940047", "stderr": "tar: /usr/share/ansible/openshift-ansible/roles/openshift_examples/files/examples/v3.10/: Cannot open: No such file or directory\ntar: Error is not recoverable: exiting now", "stderr_lines": ["tar: /usr/share/ansible/openshift-ansible/roles/openshift_examples/files/examples/v3.10/: Cannot open: No such file or directory", "tar: Error is not recoverable: exiting now"], "stdout": "", "stdout_lines": []}

=============
#roles/lib_utils/action_plugins/set_version_facts.py
    facts = {}
    if version and version != "latest":
        version = LooseVersion(version)
        version_gte_3_10 = version >= LooseVersion('3.10')
        version_gte_3_11 = version >= LooseVersion('3.11')
    else:
        # 'Latest' version is set to True, 'Next' versions set to False
        version_gte_3_10 = True
        version_gte_3_11 = False
This caused that examples_content_version/content_version was set to 'v3.10'.

After add "openshift_release=v3.11", it works well. So installer need to set correct examples_content_version when not specified in hosts file.

Version-Release number of the following components:
openshift-ansible-3.11.0-0.16.0.git.0.e82689aNone.noarch
ansible-2.6.2-1.el7ae.noarch

How reproducible:
always

Steps to Reproduce:
1. Trigger upgrade against v3.10 ocp without openshift_release specified
2.
3.

Actual results:
Upgrade failed.

Expected results:
Upgrade succeed.

Additional info:
Workaround: set openshift_release in hosts file.