MountService:  Support for alternative LVM storage list configuration

To facilitate allowing a different storage_list to be used when LVM partition alteration
is detected on a device, add a new storage_list_lvm.xml - This will be chosen when the
property ro.lvm_storage is set to 1 or true

The init scripts will set this property when an alternate storage configuration is
detected.  If the property is not set, the system will simply use the standard
storage list configuration

Change-Id: I4c3b636afad8b3343df83d97c7febaafd5d22f25