Merge changes from topic "presubmit-am-5e074e05e4c74163b4f9a025baec3cd0"

* changes:
  [automerge] Add a runtime check to ensure that system server jars are prefetched. 2p: 418ab8212c 2p: 1cab79eff5
  [automerge] Add a runtime check to ensure that system server jars are prefetched. 2p: 418ab8212c
  Add a runtime check to ensure that system server jars are prefetched.