Update efi partition to 124M from 100M

ISO creation has been failing because 100M initrd and
the kernel have grown too large for the allocated space.
Eventually we will add this value to yaml config but for
now we will just bump it.

isoutils/isoutils.go

@@ -346,7 +346,7 @@ func mkEfiBoot() error {
 	log.Info(msg)
 
 	cmds := [][]string{
-		{"fallocate", "-l", "100M", tmpPaths[clrCdroot] + "/EFI/efiboot.img"},
+		{"fallocate", "-l", "124M", tmpPaths[clrCdroot] + "/EFI/efiboot.img"},
 		{"mkfs.fat", "-n", "CLEAR_EFI", tmpPaths[clrCdroot] + "/EFI/efiboot.img"},
 		{"mount", "-t", "vfat", "-o", "loop", tmpPaths[clrCdroot] + "/EFI/efiboot.img", tmpPaths[clrEfi]},
 		{"cp", "-pr", tmpPaths[clrImgEfi] + "/.", tmpPaths[clrEfi]},