test(mariadb-operator): run the package suite from make test

The helm-unittest sweep reaches a package only through its make test
target, so the suite added with the cluster-name fix would otherwise
never run in CI.

Assisted-by: LLM
Signed-off-by: Mattia Eleuteri <mattia@hidora.io>

packages/system/mariadb-operator/Makefile

@@ -3,6 +3,9 @@ export NAMESPACE=cozy-$(NAME)
 
 include ../../../hack/package.mk
 
+test:
+	helm unittest .
+
 update:
 	rm -rf charts
 	helm repo add mariadb-operator https://mariadb-operator.github.io/mariadb-operator