Ignore oreo-specific changes to the configuration

system_server selinux work-around:
  Change-Id I95a9e0da3004873cd1944e2d426c6499d23c2972
  Probably runs into a neverallow rule on later branches

shorten target names:
  Change-Id I982aa3538154aaef3d9eb7a484febb7bbebbfa22
  Would break builder configuration

Turn off RRO for OC (26)
  Change-Id I07dca34daeb81def8197cc1f985ec4350e71d6e1
  Allow other branches to be fully Trebleized

BUG: 117576177
Test: noop
Change-Id: Ia4c3355d9169e3c7093e64a2b2a59044650d7d9a