Fix Dex policy test flake

[pasanw]

Description

After some refactors to policy rendering in #3636, the Dex component inserts rules into rendered policy based on a map iteration. Since map iteration order is random, this was causing flakes when comparing the rendered policy to the expected policy. This PR adjusts the expectation to support differences in ordering.

For PR author

• Tests for change.
• If changing pkg/apis/, run make gen-files
• If changing versions, run make gen-versions

For PR reviewers

A note for code reviewers - all pull requests must have the following:

• Milestone set according to targeted release.
• Appropriate labels:
  • kind/bug if this is a bugfix.
  • kind/enhancement if this is a a new feature.
  • enterprise if this PR applies to Calico Enterprise only.

[rene-dekker]

lgtm

[rene-dekker]

/merge-when-ready

[marvin-tigera]

OK, I will merge the pull request when it's ready, leave the commits as is when I merge it, and leave the branch after I've merged it.