tests: fix test/run to build updates.img after parsing TEST_COMPOSE

test/run

@@ -13,7 +13,7 @@
 set -eux
 
 make codecheck
-make create-updates.img
+make bots
 
 RUN_OPTS=""
 ALL_TESTS="$(test/common/run-tests --test-dir test -l)"
@@ -37,6 +37,9 @@ case "${TEST_SCENARIO:=}" in
         ;;
 esac
 
+# We need to know if a TEST_COMPOSE is specified before we start downloading the test images
+make create-updates.img
+
 # test runs in kernel_t context and triggers massive amounts of SELinux
 # denials; SELinux gets disabled, but would still trigger unexpected messages
 # we create huge VMs, so we need to reduce parallelism on CI