[release-3.11] This relaxes the Ansible version checking to allow 2.5.7.

[luis5tb]

While it is recommended to stick with 2.6, some of the packages are not
avaliable for systems running the current Long Term Support version of
OpenStack (Queens / OSP 13).

https://bugzilla.redhat.com/show_bug.cgi?id=1626538
https://bugzilla.redhat.com/show_bug.cgi?id=1635293

[sdodson]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: luis5tb, sdodson

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[openshift-ci-robot]

@luis5tb: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/prow/e2e-gcp	7b650ed	link	/test e2e-gcp
ci/prow/gcp-major-upgrade	7b650ed	link	/test gcp-major-upgrade
ci/prow/e2e-aws	7b650ed	link	/test e2e-aws

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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