Fix php deployment cookbook tests

cr https://cr.amazon.com/r/1536494/
Fix bind_mounts map in opsworks_initial_setup

Make sure that the ephemeral device is used for the bind mounts both
under Amazon Linux and Ubuntu. It was previously only working under
Ubuntu.

cr https://cr.amazon.com/r/1536527/
alternative/fallback install of bundler for more robustness
Fix creation of rc.local on Amazon Linux and add VG activation on device scanning.
expand the yum-lock timeout patch to all instance types