Don't run FileIntegrityManagerTest as instant app

The new service is for store / installer apps to query, thus doesn't
make sense to expose to instant app.

SELinux denial without this change:

  04-23 12:59:55.312   607   607 E SELinux : avc:  denied  { find } for
  pid=18820 uid=10232 name=file_integrity
  scontext=u:r:ephemeral_app:s0:c232,c256,c512,c768
  tcontext=u:object_r:file_integrity_service:s0 tclass=service_manager
  permissive=0

Bug: 154751626
Test: atest CtsSecurityTestCases:FileIntegrityManagerTest --instant
Change-Id: I1c1fdaca23ac7ac37c8ea03105ec18b19110b4a5
1 file changed