Update getremotelogs.sh to accept custom a SSH port

[yamakadi]

Hi!

Before anything else, thank you for RedELK! It's been a much welcome addition to and an essential part of our workflow.

This PR adds an SSH port argument to the getremotelogs.sh script that defaults to 22.

Due to how our lab is structured, we have been using a custom version of RedELK where the teamserver pushes the logs. We finally decided to update our team server setup to match RedELK instead, but we can't use a standard SSH port for the getremotelogs.sh script.

I can undo the style changes if necessary. They were mostly to quiet down shellcheck.

Regarding the argument count check, I didn't see an issue with passing too many arguments, so opted for a less than check to make the SSH port argument optional. Please correct me if I'm wrong.

[MarcOverIP]

Please change to:

echo "[X] Optional - need the remote system's ssh port to get logs as 4th parameter. Defaults to '22'

[MarcOverIP]

Thanks for this PR, and thanks for letting us know you appreciate RedELK.

PR looks good, and I think it is a great addition! Just one small text change before Im merging.

[yamakadi]

Thank you! Made the change!
I was hoping you'd suggest something for that to be honest. :D

[MarcOverIP]

Thank you for your contribution!