Increase devstack BM VM RAM for coreos to boot
Increase devstack BM VM RAM for coreos to boot

This change set increases baremetal VM RAM from 1024 to 1280 in
devstack script to support Coreos ramdisk version.

Change-Id: Ic93807e20d6fe3ba3a7a9f78c0a8887d1c54aa19
Closes-bug:  #1602277

NaohiroTamura/ironic,SauloAislan/ironic,openstack/ironic,pshchelo/ironic,bacaldwell/ironic,openstack/ironic,bacaldwell/ironic,SauloAislan/ironic,NaohiroTamura/ironic,pshchelo/ironic