Adds taskmanager_manager = trove.taskmanager.manager.Manager

- User reports this is needed for apt-based installs; so adding it to all
even if distro has this correct

Change-Id: I7ce4eb2fe3210bf820a622200bf027abf8a177cc
Closes-bug:1369119
Merge "Adds taskmanager_manager = trove.taskmanager.manager.Manager"