Add console=ttyS1,115200n8 to kernel args

This allows us to see kernel messages on the Equinix SOS Console.

Helps with debugging.

Initializing PCIe, USB, and Video... Done
PowerEdge R6415
BIOS Version: 1.19.0
Hard Drive Boot Requested by iDRAC

F2	= System Setup
F10	= Lifecycle Controller (Config
       iDRAC, Update FW, Install OS)
F11	= Boot Manager
F12	= PXE Boot
iDRAC IP:  10.239.135.152
Initializing Firmware Interfaces...

Enumerating Boot options...
Enumerating Boot options... Done
Loading Lifecycle Controller Drivers...
Loading Lifecycle Controller Drivers...Done
Lifecycle Controller: Collecting System Inventory...

equinix-metal-ipxe-boot/ipxe.txt

@@ -7,7 +7,7 @@ set CONFIGURL https://raw.githubusercontent.com/ii/corehost/main/equinix-metal-i
 
 set BASEURL https://builds.coreos.fedoraproject.org/prod/streams/${STREAM}/builds/${VERSION}/x86_64
 
-kernel ${BASEURL}/fedora-coreos-${VERSION}-live-kernel-x86_64 initrd=main coreos.live.rootfs_url=${BASEURL}/fedora-coreos-${VERSION}-live-rootfs.x86_64.img coreos.inst.install_dev=${INSTALLDEV} coreos.inst.ignition_url=${CONFIGURL}
+kernel ${BASEURL}/fedora-coreos-${VERSION}-live-kernel-x86_64 initrd=main coreos.live.rootfs_url=${BASEURL}/fedora-coreos-${VERSION}-live-rootfs.x86_64.img coreos.inst.install_dev=${INSTALLDEV} coreos.inst.ignition_url=${CONFIGURL} console=ttyS1,115200n8
 initrd --name main ${BASEURL}/fedora-coreos-${VERSION}-live-initramfs.x86_64.img
 
 boot