squash! Modify build system

Bug 40143: Use deterministic date in Test apk

The build config was using Date() when generating the Test apk's
versionName.
2 jobs for bug_40143_04
latest
Status Name Job ID Coverage
  Build
failed buildDebug #10807
32GB

 
  Test
skipped testLight #10808
32GB
 
Name Stage Failure
failed
buildDebug Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log