1. Specify addition inputs needed for R8 / D8 / Javac actions so that
they can be successfully executed remotely.
2. Cleanup platform configuration so that pool-names are turned into a
common variable and re-used between javac / r8 / d8 actions.
Bug: b/152273259
Change-Id: I0231a96f6e4e094e98d0f89728f6ac3e34f78118
Merged-In: I0231a96f6e4e094e98d0f89728f6ac3e34f78118
Bug: b/148798195
Test: The same change is live in master-build-rbe-testing branch where
its not causing any behavior change, and also it works for
RemoteExecution where RBE_CXX_EXEC_STRATEGY variable is set.
environment variables.
Test: Built aosp_arm-user with and without USE_RBE. With USE_RBE,
used a simple proxy script in place of rewrapper.
Change-Id: Ifb6bfd9f7292346f4750a6a409aa0def4e3c0363