Added chrony config via mco

[e-minguez]

Description

Adds optional chrony configuration

Fixes #126

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Testing

I've locally tested it by running the playbook manually

Test Configuration:

• Versions: ansible 2.9
• Hardware: localhost

Checklist

• I have performed a self-review of my own code
• If a change is adding a feature, it should require a change to the README.md and the review should catch this.
• A change should not being merged unless it passes CI or there is a comment/update saying what testing was passed.
• PRs should not be merged unless positively reviewed.

[rlopez133]

[test-ipi]

[openshift-ci-robot]

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