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

Change-Id: I7a85e7068f373b1d726aa6b27a51862fa9b7c6fd
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

Conflicts:

	envsetup.sh
envsetup: Fix installrecovery for new fstab format

Change-Id: I26ab441c28350cce70bb976b249b16c6b83ab8da

Conflicts:

	envsetup.sh