Create sample policies for labels

[chipzoller]

Related issue

What type of PR is this?

Proposed changes

Create new sample policies for working with labels.

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.

Further comments

[realshuting]

lgtm

@JimBugwadia Should we consider moving best practices to a separate repo?

[chipzoller]

Added another sample for Deployments.

[chipzoller]

@JimBugwadia @realshuting should be all set here. I'll hold off on pushing any more samples until this PR gets merged.

[JimBugwadia]

lgtm

@JimBugwadia Should we consider moving best practices to a separate repo?

@realshuting - yes, I also want to reorganize based on Pod Security Levels and use Kustomize to layer & combine them. Another enhancement we can make is to generate the markdown files from the policies, and then move them to the website so they are easy to search, etc.

@chipzoller - changes look great. Thanks!