feat(operators): supporting subset checking

[RinkiyaKeDad]

Signed-off-by: Arsh Sharma arshsharma461@gmail.com

Fixes #1367

What type of PR is this

/kind bug

Checklist

• I have read the contributing guidelines.
• I have added tests that prove my fix is effective or that my feature works.
• I have added or changed the documentation. -> Should I explain using a sample policy too in the documentation for more clarity?

[RinkiyaKeDad]

For subset definition reference check this.

Given 2 sets, S1 and S2:

• S1 In S2: means all values of S1 are in S2
• S1 NotIn S2: means none of the values of S1 are in S2

UPDATE: S1 NotIn S2: means any one of the values of S1 is not in S2

[realshuting]

lgtm

It would be good to add an additional test, see comments.

[realshuting]

Can we add another test -

key: [1.1.1.1, 4.4.4.4]
op: NotIn
value: [1.1.1.1, 2.2.2.2, 3.3.3.3]

[realshuting]

For subset definition reference check this.

Given 2 sets, S1 and S2:

• S1 In S2: means all values of S1 are in S2
• S1 NotIn S2: means none of the values of S1 are in S2

@RinkiyaKeDad This is no longer the case, can you update it?

We need to log an issue to track the doc updates in kyverno/website.

[RinkiyaKeDad]

For subset definition reference check this.

Given 2 sets, S1 and S2:

• S1 In S2: means all values of S1 are in S2
• S1 NotIn S2: means none of the values of S1 are in S2

@RinkiyaKeDad This is no longer the case, can you update it?

We need to log an issue to track the doc updates in kyverno/website.

@realshuting - updated the test and the definition. I have already opened a PR for the docs on the website repo. Please take a look at that.