Create C-Suite config module

* Defined a build target csuite_config.go for C-Suite, so that C-Suite
test modules can be declare in Android.bp files.
* Modified vts_config.go to use the general Makefile
suite_host_config.mk.

Test: make csuite, forrest test for vts
Change-Id: I5f67c54e05b113ac6c5d226930618e6811e6e602
Merged-In: I5f67c54e05b113ac6c5d226930618e6811e6e602