chore: Add pod/node count to metrics and logs for disruption

[jonathan-innis]

Fixes #N/A

Description

This adds a disrupted reschedulable pod count metric along with a disrupted node count metric. This also adds a pod count to the log that is printed when we disrupt nodes. This would help in debugging issues like in #1014 where it's tough to tell if a node is terminated with nodes bound or not.

How was this change tested?

make presubmit

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[coveralls]

Pull Request Test Coverage Report for Build 7963757649

Details

• -2 of 57 (96.49%) changed or added relevant lines in 11 files are covered.
• 4 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.01%) to 80.737%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/controllers/disruption/multinodeconsolidation.go	1	2	50.0%
pkg/controllers/disruption/singlenodeconsolidation.go	1	2	50.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/controllers/node/termination/terminator/eviction.go	2	88.79%
pkg/test/expectations/expectations.go	2	95.96%

Totals
Change from base Build 7938655773:	0.01%
Covered Lines:	8014
Relevant Lines:	9926

---

💛 - Coveralls

[Bryce-Soghigian]

Very useful metrics, excited to see this!

[jonathan-innis]

@Bryce-Soghigian Thanks for the feedback.

[engedaam]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: engedaam, jonathan-innis

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