Make GetTargetProperties() aware of more complex targets, like 'android_arm',...

Make GetTargetProperties() aware of more complex targets, like 'android_arm', instead of just 'android'.

Test: Added new unit test and updated existing tests.

Test: bazel build //bionic/... //external/... //frameworks/... //system/...

Test: ./build/bazel/scripts/run_presubmits.sh

Change-Id: I250d1964f5cf42b92ddb929379d35d8c844423f7