define before_tag function here instead of in oas_behave repo

test/behave/features/environment.py

 from oas_behave.environment import *
+
+
+def before_tag(context, tag):
+    """Define steps run before each tag."""
+
+    userdata = context.config.userdata
+    if tag == 'grafana':
+        context.grafana = get_values(userdata, 'grafana')
+
+    if tag == 'nextcloud':
+        context.nextcloud = get_values(userdata, 'nextcloud')