[automerger skipped] Merge "Use a different key for signing networkpolicy test app." into oreo-mr1-cts-dev
am: 4e67a8094e  -s ours

Change-Id: I1c6594e5255883745690d5977c41ef9c8e529e71
tree: 032cbcdf0dd85b1018333669ef4029ed32955c5c
  1. tests/