Remove contains function

[kacejot]

Signed-off-by: Maxim Goncharenko goncharenko.maxim@apriorit.com

Related issue

#2260
Fixes #2345

What type of PR is this

/kind bug

Proposed Changes

Removed contains function duplicate because it is already defined in the upstream go-jmespath.

Proof Manifests

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: drop-cap-net-raw
spec:
  validationFailureAction: enforce
  background: false
  rules:
  - name: drop-cap-net-raw
    match:
      resources:
        kinds:
        - Pod
    validate:
      deny:
        conditions:
          any:
          - key: "{{ request.object.spec.containers[].securityContext.capabilities.drop[] | contains(@, 'NET_RAW') }}"
            operator: Equals
            value: false
                                                                                                         

apiVersion: v1
kind: Pod
metadata:
  name: test
spec:
  initContainers:
  - name: jimmy
    image: defdasdabian:923
    command: ["/bin/sh", "-c", "sleep infinity"]
    securityContext:
      capabilities:
        drop:
        - XXXNET_RAWYYY
        - SETUID
  containers:
  - name: test
    image: defdasdabian:923
    command: ["/bin/sh", "-c", "sleep infinity"]
    securityContext:
      capabilities:
        drop:
        - XXXNET_RAWYYY
        - SETUID
        - CAP_FOO_BAR
  - name: asdf
    image: defdasdabian:923
    command: ["/bin/sh", "-c", "sleep infinity"]
    securityContext:
      capabilities:
        drop:
        - CAP_SOMETHING

Checklist

• I have read the contributing guidelines.
• I have added tests that prove my fix is effective or that my feature works.
• My PR contains new or altered behavior to Kyverno and
  • I have added or changed the documentation myself in an existing PR and the link is:
  • I have raised an issue in kyverno/website to track the doc update and the link is:
  • I have read the PR documentation guide and followed the process including adding proof manifests to this PR.

[realshuting]

@kacejot - please provide the test result in the PR description and cover that in the tests.

[realshuting]

Thanks @kacejot !