VTS: Change stopNetworkScan from 1_1 to 1_2 am: f2d5c9a4eb am: 287c3d8e24

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1200141

Change-Id: I4d1e1d2e5358c4ac9d06ba71f6e022e4cf40d5f5