Merge "Add shell command handler for account manager to allow enabling service...

Merge "Add shell command handler for account manager to allow enabling service binding for instant app. Test: cts-tradefed run cts -m CtsAccountManagerTestCases cts-instant-tradefed run cts-instant -m CtsAccountManagerTestCases Bug: 79367659" into pi-dev
am: 64896541

Change-Id: I6221649f9035bcaa5dea4066b5a61c9dc8fdb06d