envsetup: Wait for device in installboot/installrecovery

 * Useful when you're racing against a bug that causes a kernel panic
   shortly after USB turns on :(

Change-Id: I2a503e4b195e632ed5b67a77b942e80c47d0ff45

envsetup: Use wait-for-online so these cmds work in recovery

Change-Id: I7a85e7068f373b1d726aa6b27a51862fa9b7c6fd