feat: ability to add additional labels to serviceMonitor

[dotdc]

Signed-off-by: David davidcalvertfr@gmail.com

Description

Added the ability to add additional labels to the serviceMonitor in the helm chart.
This is required if you use a custom serviceMonitorSelector in kube-prometheus-stack :

    serviceMonitorSelector:
      matchLabels:
        mycustomlabel: somevalue

Source: https://github.com/prometheus-community/helm-charts/blob/main/charts/kube-prometheus-stack/values.yaml#L2394

I didn't created an associated issue because I consider this to be a trivial fix, but can create one if needed.
As I'm not sure about the release process, I didn't increase the chart version.
Let me know if I need to increment the semver or do something else.

David

Checklist

• I've read the guidelines for contributing to this repository.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[dotdc]

The CI fails, but doesn't seems related to my patch:

[It] check requeue interval bigger then 0
/home/runner/work/trivy-operator/trivy-operator/pkg/compliance/clustercompliancereport_test.go:88
Expected
      <bool>: false
  to be true
In [It] at: /home/runner/work/trivy-operator/trivy-operator/pkg/compliance/clustercompliancereport_test.go:92
------------------------------
•••
Ran 6 of 6 Specs in 4.149 seconds
FAIL! -- 5 Passed | 1 Failed | 0 Pending | 0 Skipped[It] check requeue interval bigger then 0
/home/runner/work/trivy-operator/trivy-operator/pkg/compliance/clustercompliancereport_test.go:88
Expected
      <bool>: false
  to be true
In [It] at: /home/runner/work/trivy-operator/trivy-operator/pkg/compliance/clustercompliancereport_test.go:92
------------------------------
•••
Ran 6 of 6 Specs in 4.149 seconds
FAIL! -- 5 Passed | 1 Failed | 0 Pending | 0 Skipped

[erikgb]

I think this is a flake that I have seen before. @josedonizetti?

[chen-keinan]

@dotdc will trigger it again , if it pass I will open an issue for this test