List-* naming inconsistencies

[ahmetb]

azure account list-location <- singular
azure vm list-ip-addresses <- plural

[mayurid]

Burt Bielicki (@BurtBiel) and Yugang Wang (@yugangw-msft) : Do you see any concerns with making it consistent as "list_ip_address"? if I am not wrong this is a custom command.
Also, we should look through and see if there are more such inconsistencies. (I will take a pass)

[BurtBiel]

Mayuri Diwan (@mayurid) Yugang Wang (@yugangw-msft)
I think list ip addresses (plural) is more correct since lists return arrays. That also fits with the English command "list ", e.g. "list the tasks".

To best fit our patterns we would say "ip-address list", but for single commands I think bunching up into "list-" is fine.

[yugangw-msft]

Burt Bielicki (@BurtBiel) , I agree. I will fix the account list command name then

[yugangw-msft]

I found 2 other places and updated them as well