Fix minimum_diskGB for config-nodemgr

Change-Id: Ic56ee1b2154ba4cae94c3c64f9f8df06ab0cfeba
diff --git a/opencontrail/files/4.0/contrail-config-nodemgr.conf b/opencontrail/files/4.0/contrail-config-nodemgr.conf
index d5d632f..f7f8034 100644
--- a/opencontrail/files/4.0/contrail-config-nodemgr.conf
+++ b/opencontrail/files/4.0/contrail-config-nodemgr.conf
@@ -1,3 +1,8 @@
 {%- from "opencontrail/map.jinja" import config with context %}
+{%- if pillar.opencontrail.database is defined and config.version >= 4.0 %}
+[DEFAULTS]
+minimum_diskGB={{ pillar.opencontrail.database.get('minimum_disk', 80) }}
+{%- endif %}
+
 [COLLECTOR]
 server_list={% for member in config.analytics.members %}{{ member.host }}:8086 {% endfor %}