PERFSCALE-1818: Initial commit of ansible-microshift automation

[sjug]

• Pre-localhost setup and logging setup
• Add cadvisor to microshift node, run as service
• Fix systemd_service var and apply firewall rules sooner
• Manage prometheus config via template
• Need to restart cadvisor after CRI-O starts in order to pick up the CRI-O container metrics
• Split out EPEL repo install and add pbench agent tasks
• Add pbench to README & pbench_env to vars
• Set up pbench and kubectl
• Make pbench-user-benchmark async
• Updated inventory vars
• Move API checks to remote node and automate pbench data collection
• Write three stages of disk usage (pre-install, post-install, post-run) to file
• Modify timing tasks: reorder and small fixes
• New disk usage pattern + other small changes
• Add warm start measurement
• Rename install-localhost role to setup-localhost for clarity
• Remove microshift state, unused local cluster state tracking
• Move into ansible subdir
• Add something to README.md

Which issue(s) this PR addresses: This PR adds automation to measure the footprint and performance metrics of MicroShift via Ansible scripts.

[dhellmann]

Let's link this to the Jira ticket

/retitle PERFSCALE-1818: Initial commit of ansible-microshift automation

[ggiguash]

Let's merge the first version of this change. I'm approving it and putting it on hold until @sjug feels convenient to release and merge it. Once merged, we should then discuss our next steps. /hold /lgtm

[sjug]

I've addressed pretty much all the review comments and we're in good shape for the most part. Do you want me to squash and push one commit or do you squash merge?

[ggiguash]

/lgtm

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ggiguash, sjug

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[sjug]

/unhold

[openshift-ci[bot]]

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