delete the flags reference from docs and point to flag defs directly instead

[mflendrich]

cli-arguments.md is a verbatim copy of pflag flag definitions present in the code. pflag takes care of pretty-printing an equivalent of the flags table in cli-arguments.md.

The scope of this issue is to de-duplicate the flag reference, and point users to either --help, or flag definitions in the code.

[rainest]

I propose we drop this and continue maintaining the document. Users don't typically have a standalone controller binary and changing the container args to --help and checking logs or execing the container locally is a bit clunky and unintuitive. We shouldn't expect users to review code, even if it's relatively straightforward--it's out of line with how users typically interact with the controller and doesn't align with how we document the rest of it.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.