make test01.vtc do something useful

Change-Id: Ica5e12102e33f953bc176e6031abf2aa3806112f
various small stuff

Change-Id: I6bc3900623797f52d1f53f52248b331873266477
some JSON parser code

Change-Id: I12be1c3306609da622eff0e0d2e177803250b18e