NIFI-5988 Fixed validation issues on database and collection names.

[MikeThomsen]

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[MikeThomsen]

@zenfenan @mattyb149

[zenfenan]

Reviewing.

[zenfenan]

I have made one suggestion for the database name validator. Other than that, everything looks good to me.

[MikeThomsen]

@zenfenan made the change.

[MikeThomsen]

@zenfenan @mattyb149 can we close this?

[MikeThomsen]

@zenfenan @mattyb149 can we close this out?

[github-actions]

We're marking this PR as stale due to lack of updates in the past few months. If after another couple of weeks the stale label has not been removed this PR will be closed. This stale marker and eventual auto close does not indicate a judgement of the PR just lack of reviewer bandwidth and helps us keep the PR queue more manageable. If you would like this PR re-opened you can do so and a committer can remove the stale tag. Or you can open a new PR. Try to help review other PRs to increase PR review bandwidth which in turn helps yours.