Fix AssociationRevokedTest flaky

1. Call cdm.associate() in onStart() instead of onCreate()
2. 1 second delay before checking the assoication to avoid flaky.

Test: atest CtsCompanionDeviceManagerUiAutomationTestCases:AssociationRevokedTest
Fix: 236990060
Change-Id: If7418c22191bf7772dafceed0028e0c6df99fd40
2 files changed