Changes

Bug 549754: Reduce fork count to one (single vm)
Default in MavenMaster is a factor of 0.5 times the number of CPU cores. 
After discussion, the parallel execution is not necessary, so we fix 
this to "1".
Apply this change also for sdk
Change-Id: Ie6804708320a322a238c2e7e373fa9eb7ee5d1e5