Raise internal-build Min SDK version from 8 to 9
Raise internal-build Min SDK version from 8 to 9

* Corresponds to 31295a714f22e

Change-Id: I315aaa7430ab1056679d881d8832343d95a3f9bb

rameshvoltella/digits-android,jaydeep17/digits-android,metao1/digits-android,twitter/digits-android,jaydeep17/digits-android,dejavu1988/digits-android,dejavu1988/digits-android,twitter/digits-android,rameshvoltella/digits-android,metao1/digits-android