Enable STL in system/keymaster. am: c0f1efe6f9 am: 7c267e4c5e am: a1eaecd37e am: 4105869dc9

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/1674706

Change-Id: Ief433779f31fbfbaac88ad30f1bd0580fe4f0308