Arguments start with "-" cause error

[peizhou298]

az feedback auto-generates most of the information requested below, as of CLI version 2.0.62

Describe the bug
If your command input starts with "-", it would throw an error "Excepted one argument".

To Reproduce
Type any command with a string argument, and give input starts with "-".
eg. this is our cli extension:

[jiasli]

This is actually an issue with python's argparse. See https://stackoverflow.com/questions/16174992/cant-get-argparse-to-read-quoted-string-with-dashes-in-it

--jvm-options="-XxMaxSize=1024" should work.