Cleanup with stopSitters() calls. in service.cc

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Fixed critical bug with baby sitter spawned two or more times per one service. It caused problems with restarting services which takes more than a second to launch and it caused lot of mess in long ss runtime.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>