Increase disk size of slaves
Increase disk size of slaves

Change-Id: I38e839a7a4301346b4d967007bf6b6c33a9f0e87

bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration,bazelbuild/continuous-integration