K8S: Adding ignored pod names as config parameter

[euniceek]

Description:
This PR addresses #1077 by adding a new parameter to the K8S configuration allowing users to define names of pods to ignore while tagging. Previously, the names are hardcoded and noted as TODO.

Testing:

• make was used to test the new implementation and to ensure no other pre-existing functionality was broken.

• New unit tests were added to ensure that the default ignored_pod_names are [jaeger-agent, jaeger-collector] and that users will be able to add additional pod names.

[bogdandrutu]

/cc @owais @jrcamp

[owais]

Since we already have filter config above, I think adding a more generic exclude would be better than something dedicated to just ignoring pods. May be something like

exclude:
    pods:
        - jaeger-agent
        - jaeger-collector

[owais]

Actually I think the following would be even better as it's more future proof. This can allow us to exclude pods by fields other than name in future if we want.

exclude:
    pods:
        - name: jaeger-agent
        - name: jaeger-collector

[euniceek]

Sounds good. Made those changes! :)

[owais]

Accidentally approved :)

[owais]

If we make the changes suggested below, this should read something like the following:

for _, excludedPod := range c.Exclude.Pods {
 		if excludedPod.Name.MatchString(pod.Name) {

[euniceek]

Thanks for the feedback and help! The requested changes have been made.

[mx-psi]

PR looks good to me but CI is failing because of an unrelated failure (probably you need to rebase/merge main to get #3735?). Could you try to fix the issue?

[mx-psi]

I am going to add the ready-to-merge label since this looks ready and has three approvals