Printing from secondary user not working.

The last refactoring of how the print dialog activity is started moved
the code that creates the pending intent from the spooler which is a
per user app to the system process but failed to create the intent
for the right user. Also the code in the print manager service that
puts a notification for a newly isntalled print service was not taking
into account the current user.

bug:11199393

Change-Id: I64ecf9dc1457ec4d58cc1a62e53735bb0793a003