Migrate update-snippets to azpysdk, require black as prereq

[JennyPng]

request:

Let's require the azpysdk sdk to run the black check before. 
We can write a message saying "Running black before as a required step". 
We can also add a --no-black if someone locally wants to save time and they are confident of what they are doing.
Why ? I was having some trouble today with black and the updater script. Running it without azpysdk and with was yielding interesting results which boiled down to:
 
I think black and the snippet updater have a relationship. Since the formatting was off, the snippet updater changes were not lining up. 
 
now when I ran black with the right config, then snippet picked up the proper changes and applied them
 
formatting plays some role in updater making changes and mapping the tags