now you have the option to NOT set the password if the user already exists,
this works well for 'initial password setting' on user creation and avoids
having extra tasks and conditionals.
Signed-off-by: Brian Coca <briancoca+dev@gmail.com>
Merge branch 'user_password_update_optional' of git://github.com/bcoca/ansible into devel

Conflicts:
	library/system/user