[Enhancement Request] Make it possible to pass "support-diagnostics" parameters when running support diagnostics

[kunisen]

Per reading https://github.com/elastic/eck-diagnostics/blob/main/internal/stackdiag.go#L135-L156, it doesn't seem like we are able to pass "support-diagnostics" parameters, i.e. --bypassDiagVerify, --noVerify when running support diagnostics.

These 2 parameters are sometimes required to run support diagnostics. Per https://github.com/elastic/support-diagnostics,

• --bypassDiagVerify: Turn off the internal check where the diagnostic queries Github to see if there is a newer version available. Useful in air gapped environments with no internet access. Default value is false.
• --noVerify: Bypass hostname verification for the certificate when using the --ssl option. This can be unsafe in some cases, but can be used to bypass issues with an incorrect or missing hostname in the certificate. Default value is false.

While we understand we can run support diagnostics separately, it would be great if we could have a way to pass support-diagnostics related parameters when running support diagnostics, especially the above 2 options.

Thanks!

cc @maggieghamry @jguay

[pebrc]

I would say we should probably always set --bypassDiagVerify to true

[kunisen]

thanks @pebrc yeah, this is one we probably should encourage to set as it doesn't really harm anything and when it's air-gapped, it's always blocked...