Extend user creation with more granularity

 Changes:
   groups now a variable with a preset, since there may be instances
   where sudo/admin will NOT be desired.
   home now entirely a variable, defaults to previous action, but
   handles cases where created user may not belong in /home
   managed home flag, defaulted to enabled.

No impact to current functionality.  Allows for more granular changes
in the future. Typo fix for managehome.

Change-Id: Id0921f5b28ea0ffd2230d94e87673e6b39ac060e
Merge "Extend user creation with more granularity"