test: provision test machine from tests

Don't rely on the deployment script to install the right config or to start the
services.

This further disentangles the tests from schutzbot.

test/cases/api.sh

@@ -14,6 +14,13 @@
 set -euxo pipefail
 
 
+#
+# Provision the software under tet.
+#
+
+/usr/libexec/osbuild-composer-test/provision.sh
+
+
 #
 # Verify that this script is running in the right environment. In particular,
 # it needs variables is set to access AWS.
@@ -33,7 +40,6 @@ function cleanup() {
 }
 trap cleanup EXIT
 
-
 #
 # Install the aws client from the upstream release, because it doesn't seem to
 # be available as a RHEL package.