[Thread] restarts when ot-daemon crashes

This commit handles the ot-daemon crash by automatically restarting it
and rejoin the network if ever joined.

This also fixes the address not deleted issue in TunInterfaceContorller.

Bug: 321540728
Bug: 309792480
Change-Id: I3ed466eb70818974a1e57f01456363bdf82915d5
10 files changed