Set up E2E tests on CentosCI

[JohnStrunk]

Describe the feature you'd like to have.
We need to have automated E2E testing to make sure the operator continues to function correctly.

What is the value to the end user? (why is it a priority?)
Automated E2E testing will help keep master working and decrease the likelihood of regressions, leading to higher quality releases.

How will we know we have a good solution? (acceptance criteria)
On each commit/pr:

• Initialize a multi-node cluster
• Start the operator
• Run a configurable set of operations
• Cleanly shut the operator down
• Ensure clean end state

Additional context
Child of #5