Run server-deb Travis job in trusty environment.
Run server-deb Travis job in trusty environment.

dunkhong/grr,google/grr,google/grr,google/grr,google/grr,dunkhong/grr,dunkhong/grr,google/grr,dunkhong/grr,dunkhong/grr,dunkhong/grr,google/grr,google/grr,dunkhong/grr