Add default value for New relic env vars

Author: Rub21

osm-seed/templates/web-deployment.yaml

@@ -86,9 +86,9 @@ spec:
               value: {{ .Values.web.env.NOMINATIM_URL }}
             # Here can be added other Env variables for monitoring, debugging, etc.
             - name: NEW_RELIC_LICENSE_KEY
-              value: {{ .Values.web.env.NEW_RELIC_LICENSE_KEY }}
+              value: {{ .Values.web.env.NEW_RELIC_LICENSE_KEY | default ""}}
             - name: NEW_RELIC_APP_NAME
-              value: {{ .Values.web.env.NEW_RELIC_APP_NAME }}
+              value: {{ .Values.web.env.NEW_RELIC_APP_NAME | default ""}}
       {{- if .Values.web.nodeSelector.enabled }}
       nodeSelector:
         {{ .Values.web.nodeSelector.label_key }} : {{ .Values.web.nodeSelector.label_value }}