[Predator] Revoke the access of findit-for-me.googleplex.com to https://chrome-internal.googlesource.com/chrome/tools/buildspec.git/.

There are 3 steps to migrate the service smoothly from findit-for-me:googleplex to predator-for-me.

1. grant predator-for-me access to https://chrome-internal.googlesource.com/chrome/tools/buildspec.git/

2. Integate predator-for-me with Fracas, Cracas and Cluster

3. Disable findit-for-me:googleplex and revoke accesses.