aidl_integration_test: java split binary

Now the Java server uses the old version test, and the client uses the
new version without any workarounds.

Bug: 178870456
Test: ./run_integration_test.sh w/ w/o failures
Test: atest aidl_integration_test
Change-Id: I818614a224c41fa5bf40d89875a694bd3b72c136
7 files changed