Set JUnit task forkmode to once so all tests run in one JVM.
Set JUnit task forkmode to once so all tests run in one JVM.

Test speed up by 50 seconds (out of 65).

Reviewed by: Alex
Rietveld Issue: 130004

vega113/WaveInCloud,vega113/WaveInCloud,vega113/WaveInCloud,vega113/WaveInCloud