Disable retry on 404 response with flags

[jj-asama]

I was testing fishymetrics on a mock redfish server and it was taking too much time. Debugging took me to this part of the code where it sleeps for 2s and retries 404s.
I believe if a BMC is returning 404 any URL, it is not a transient response. If maintainers also think so, we can remove this retry logic unconditionally. For now, created a flag to disable it if needed.

Also did a bit of readability improvements.

[CLAassistant]

All committers have signed the CLA.

[ibrahimkk-moideen]

LGTM

[ibrahimkk-moideen]

@jj-asama could you update your commit to have verified signatures.

[derrick-dacosta]

@jj-asama you need to verify your signature in Github, these instructions can show you how,

https://dev.to/pwd9000/github-commit-verification-using-ssh-2pim

Then you'll need to resubmit your last commit with the verified signature.

[jj-asama]

@jj-asama you need to verify your signature in Github, these instructions can show you how,

https://dev.to/pwd9000/github-commit-verification-using-ssh-2pim

Then you'll need to resubmit your last commit with the verified signature.

Sorry @derrick-dacosta . I somehow missed @ibrahimkk-moideen 's comment. I have pushed it again with signature now

[derrick-dacosta]

@jj-asama if you can just fix the conflicts I will get this merged into main

[ibrahimkk-moideen]

LGTM