IPA Ramdisk should log to console in devstack

Setting these kernel command line parameters will have journald log
everything to the console, which means it'll end up in the appropriate
log in the ironic-bm-logs/ directory.

Change-Id: I0f4c79436c4856a5aa72f00f1ac8c2ed534b702e
Merge "IPA Ramdisk should log to console in devstack"