ci: Update image list

We really need to change this so that it fetches the image
list dynamically from Quay, but for the time being at least
make sure the static list is accurate.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

Makefile.ci

@@ -243,23 +243,25 @@ ci-help:
 	@echo
 	@echo "    centos-7"
 	@echo "    debian-9"
+	@echo "    debian-10"
 	@echo "    debian-sid"
-	@echo "    fedora-28"
 	@echo "    fedora-29"
+	@echo "    fedora-30"
 	@echo "    fedora-rawhide"
+	@echo "    ubuntu-16"
 	@echo "    ubuntu-18"
 	@echo
 	@echo "Available cross-compiler container images:"
 	@echo
-	@echo "    debian-{9,sid}-cross-aarch64"
-	@echo "    debian-{9,sid}-cross-armv6l"
-	@echo "    debian-{9,sid}-cross-armv7l"
-	@echo "    debian-sid-cross-i686"
-	@echo "    debian-{9,sid}-cross-mips64el"
-	@echo "    debian-{9,sid}-cross-mips"
-	@echo "    debian-{9,sid}-cross-mipsel"
-	@echo "    debian-{9,sid}-cross-ppc64le"
-	@echo "    debian-{9,sid}-cross-s390x"
+	@echo "    debian-{9,10,sid}-cross-aarch64"
+	@echo "    debian-{9,10,sid}-cross-armv6l"
+	@echo "    debian-{9,10,sid}-cross-armv7l"
+	@echo "    debian-{10,sid}-cross-i686"
+	@echo "    debian-{9,10,sid}-cross-mips64el"
+	@echo "    debian-{9,10,sid}-cross-mips"
+	@echo "    debian-{9,10,sid}-cross-mipsel"
+	@echo "    debian-{9,10,sid}-cross-ppc64le"
+	@echo "    debian-{9,10,sid}-cross-s390x"
 	@echo
 	@echo "Available make variables:"
 	@echo