Runbook script improvements

[jnels124]

Description:

• skip clean shutdown when restoring from snapshot
• ensure all steps can be reran if previous run resulted in failure
• force delete pods that don't scale down
• make master version upgrade optional
• increase timeout for clean shutdown and allow retries
• ensure gke version upgrade is bumping to later version

Related issue(s):

Fixes #11662

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[lfdt-bot]

🎉 Snyk checks have passed. No issues have been found so far.

✅ security/snyk check is complete. No issues have been found. (View Details)

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
❌ -32.69% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (41ef086)	36336	34035	93.67%
Head commit (65f8257)	59764 (+23428)	36445 (+2410)	60.98% (-32.69%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#11686)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[xin-hedera]

LGTM