Use xenvm to replace more lvm commands
Use xenvm to replace more lvm commands

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@eu.citrix.com>

xapi-project/sm,kostaslamda/sm,xapi-project/sm,pritha-srivastava/sm,germanop/sm,malcolmcrossley/sm,kostaslamda/sm,malcolmcrossley/sm,malcolmcrossley/sm,kostaslamda/sm,pritha-srivastava/sm,chandrikas/sm,xapi-project/sm,chandrikas/sm,germanop/sm,chandrikas/sm,germanop/sm,pritha-srivastava/sm