Add ability to ignore labels

[HumairAK]

The way I understand it, PAD will need to be restarted whenever a label updates. This is an issue for when dealing with metrics that contain pod names as a label for example. If the pod has a generated suffix, a new one is generated upon each restart, thus requiring pad to be restarted, and being unable to leverage the old pod's historical data (iiuc).

It would be nice if I could pass a flag or file with a list of labels to ignore :)

[4n4nd]

This is a great suggestion.
I think we could add a new flag something like
FLT_IGNORE_LABEL_CHANGES="pod_name, pod_ip" and it would ignore the changes in those specific labels.

[sesheta]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[sesheta]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
Rotten issues close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

/lifecycle rotten

[sesheta]

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
Mark the issue as fresh with /remove-lifecycle rotten.

/close

[sesheta]

@sesheta: Closing this issue.

In response to this:

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen.
Mark the issue as fresh with /remove-lifecycle rotten.

/close

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