chore: Add pod scheduled prometheus label

[jonathan-innis]

Fixes #N/A

Description

Add scheduled prometheus label for the pod_state metrics

How was this change tested?

make presubmit

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[jmdeal]

/lgtm

[coveralls]

Pull Request Test Coverage Report for Build 11994676866

Details

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• 4 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.003%) to 81.048%

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Files with Coverage Reduction	New Missed Lines	%
pkg/test/expectations/expectations.go	4	94.34%

Totals
Change from base Build 11993257040:	0.003%
Covered Lines:	8844
Relevant Lines:	10912

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💛 - Coveralls