currently,grunt (command to run unit testcases) returns 0 even in case
of failure of any testcases. This is happening as "force" option is
enabled by default.
Removed the "force" option by default and if "force" option is
required,it can enabled while launching the task "grunt karma:all
--force"

Change-Id: Icce5dd5f644c34dfc55b331ae384d51a3d6185d6
Merge "currently,grunt (command to run unit testcases) returns 0 even in case of failure of any testcases. This is happening as "force" option is enabled by default. Removed the "force" option by default and if "force" option is required,it can enabled while launching the task "grunt karma:all --force""