minor fix in yaml load with Loader

Change-Id: I1bc0e7197f6057c942490b710fbaf25013202ecb
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/n2vc/k8s_helm_conn.py b/n2vc/k8s_helm_conn.py
index cd15d73..4e6c4c5 100644
--- a/n2vc/k8s_helm_conn.py
+++ b/n2vc/k8s_helm_conn.py
@@ -894,7 +894,7 @@
             for key in params:
                 value = params.get(key)
                 if '!!yaml' in str(value):
-                    value = yaml.load(value[7:])
+                    value = yaml.load(value[7:], Loader=yaml.SafeLoader)
                 params2[key] = value
 
             values_file = get_random_number() + '.yaml'