Adjust the PROJECT name in the live-server hooks for SUBARCH.

live-build/ubuntu-server/hooks/030-root-squashfs.binary

@@ -22,6 +22,8 @@ fi
 
 . config/functions
 
+PROJECT=$PROJECT${SUBARCH:+-$SUBARCH}
+
 mkdir binary/boot/squashfs.dir
 cp -a chroot/* binary/boot/squashfs.dir
 

live-build/ubuntu-server/hooks/032-installer-squashfs.binary

@@ -29,6 +29,8 @@ FILESYSTEM_ROOT=binary/boot/squashfs.dir
 INSTALLER_ROOT=binary/boot/installer.squashfs.dir
 OVERLAY_ROOT=binary/overlay
 
+PROJECT=$PROJECT${SUBARCH:+-$SUBARCH}
+
 mkdir -p "$INSTALLER_ROOT" "$OVERLAY_ROOT"
 
 # Create an installer squashfs layer

live-build/ubuntu-server/hooks/033-kernel-bits.binary

@@ -27,6 +27,8 @@ INSTALLER_ROOT=binary/boot/installer.squashfs.dir
 KERNEL_BITS_ROOT=binary/boot/kernel-bits.dir
 KERNEL_BITS_OVERLAY=binary/boot/overlay-kernel-bits
 
+PROJECT=$PROJECT${SUBARCH:+-$SUBARCH}
+
 case ${SUBARCH-} in
 	intel-iot)
 		variants='intel'