Fix various testcases to have smoother test runs

Remove GattConnectTest:test_write_characteristic_stress
from the safe sanity list.
Modify BleStressTest:test_loop_scanning_100_verify_no_hci_timeout
to run in a basic environment.

Change-Id: Ib5026be9a56f2b4921af63f953f28552889407e4
3 files changed
tree: 88f4592cee3f3c7d622c5df303b4e80c6598f3d2
  1. acts/