kubernetes pool grains fix
diff --git a/kubernetes/files/kubernetes.grain b/kubernetes/files/kubernetes.grain
index a053883..5d0a225 100644
--- a/kubernetes/files/kubernetes.grain
+++ b/kubernetes/files/kubernetes.grain
@@ -1,3 +1,7 @@
{%- from "kubernetes/map.jinja" import pool with context -%}
+{%- if pool.get('service', {})|length > 0 %}
{%- set service_grains = {'kubernetes': {'service': pool.get('service', {}).get('local', {})}} -%}
-{{ service_grains|yaml(False) }}
\ No newline at end of file
+{% else %}
+{%- set service_grains = {'kubernetes': {}} -%}
+{%- endif %}
+{{ service_grains|yaml(False) }}