components/boot, teams/server: Add partitioning hack for the Raspberry Pi 3

The Raspberry Pi 3 does not recognize a FAT filesystem marked with
the 0xef type, so until we drop support for this device, hack the
partition manually to use a legacy FAT filesystem partition type.

teams/server.xml

@@ -110,7 +110,7 @@
 	<preferences profiles="ServerDisk" arch="aarch64">
 		<type image="oem"
 		      filesystem="xfs"
-		      devicepersistency="by-uuid" force_mbr="true"
+		      devicepersistency="by-uuid" force_mbr="true" editbootinstall="editbootinstall_rpilegacy.sh"
 		      bootpartition="true" bootpartsize="1000" bootfilesystem="ext4" efipartsize="500" firmware="uefi"
 		      rootfs_label="fedora"
 		      >