Use tinyipa as the ramdisk
Use tinyipa as the ramdisk

Switch from coreos to tinyipa as the ramdisk

Change-Id: I526b8fb38dae39d3971bedcae84d3c618c4cc314

JohnVillalovos/devstack-gate-test,dparalen/devstack-gate-test,dparalen/devstack-gate-test,JohnVillalovos/devstack-gate-test,dparalen/devstack-gate-test,JohnVillalovos/devstack-gate-test