Merge "Bluetooth LE Connection Priority test refactor" into oreo-cts-dev

mentioned in commit a6dc3ce4

mentioned in commit 24da0374

mentioned in commit 34ba54a7

mentioned in commit d8b09a75

mentioned in commit f7929fe6

mentioned in commit e04f0a79

mentioned in commit 6107085e

mentioned in commit b8fd3ae1

mentioned in commit 9b3571a3

mentioned in commit 0e8b5dd0

mentioned in commit 79872b3b

mentioned in commit 684bffdb