feat(update-security-json): Update security.json when secret is updated

[mcarroll1]

This feature is targeting this issue

• Added Ovewrite flag (defaults to false). If flag is true, setup-zk initContainer will check applied security.json against version in the secret and apply if there is a diff
• Updated descriptions about maxPodsUnavailable, as negative numbers don't appear to be work
• Was running into issues with GINGKO_PARAMS when running integration tests, so added a default

The integration test is a bit blunt, but I wasn't sure how to demonstrate auth being applied. I tried creating a curl pod to curl solr, but was facing issues connecting to the two. I ended up changing the auth that the operator connects to solr with as a means of demonstrating.

The test takes a couple minutes to run. Please give any feedback on what I could do differently there. You can see the curl attempt in 1a7bb57. Also I'm unsure if I updated the CRD correctly, as it's generating some unexpected diffs.

This feature is important to the CI for my team, hence me adding two features around security.json in short order.