[automerger skipped] DO NOT MERGE Add sleep(3) after stopSupplicant when...

[automerger skipped] DO NOT MERGE Add sleep(3) after stopSupplicant when VtsHalWifiSupplicant am: ca078935 -s ours am: 8adb4f65 -s ours am: ad6c07e4 am: 1d251753 -s ours am: a635038c am: 107456af -s ours am: 7c4efd57

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1478060

Change-Id: I20f396e3b0efa36664ea2240a3f213d6c20df0d7