allow specifying remote caching opt for rewrapper

This is needed to enable local execution via reproxy for metalava
actions for developer builds without causing permissions errors
and without disabling it for other actions.

Bug: b/308154125
Tested: ran a local build and verified all metalava actions were
executed locally without attempting to write to the remote cache.

Change-Id: Ia6f616e1ff5d0c71597ebf688765925ac81d19c3