Add multiple features and fixes to qwalk.py

[thebillness]

Logging:

• Added unique log file naming by default.
• Added a "None" option for the logging parameter (-l) that will direct logging to devNull (cross-platform).

Passwords

• Added option to securely provide the password via getpass and removed the default of 'admin' from the password parameter (-p).

Foot-Gun Prevention

• Added a check and override parameter (-f) for preventing the script from running directly on a Qumulo node.

[WaffleThief123]

Is there a particular reason for the check + override for running directly on a Q node? IME nodes have enough hardware resources to do this safely (unless the cluster is in the middle of an upgrade, node add, or disk replacement)

[thebillness]

Is there a particular reason for the check + override for running directly on a Q node? IME nodes have enough hardware resources to do this safely (unless the cluster is in the middle of an upgrade, node add, or disk replacement)

Recommendation of Qumulo support:

qwalk must not be run from a Node. It should be run from an external Linux or Windows client

[WaffleThief123]

Guess it's a new rec since I was working support there, will keep it in mind :)

[thebillness]

Well, I did take down two nodes with it, so I might have helped solidify that recommendation. 😁