Clean up formating of nodegroups

salt/files/master.d/f_defaults.conf

 #nodegroups:
 #  group1: 'L@foo.domain.com,bar.domain.com,baz.domain.com and bl*.domain.com'
 #  group2: 'G@os:Debian and foo.domain.com'
-{% if 'nodegroups' in cfg_master %}
+{%- if 'nodegroups' in cfg_master %}
 nodegroups:
-  {% for name, lvl in cfg_master['nodegroups'].items() %}
+  {%- for name, lvl in cfg_master['nodegroups'].items() %}
   {{ name }}: {{ lvl }}
-  {% endfor %}
-{% elif 'nodegroups' in cfg_salt %}
+  {%- endfor %}
+{%- elif 'nodegroups' in cfg_salt %}
 nodegroups:
-  {% for name, lvl in cfg_salt['nodegroups'].items() %}
+  {%- for name, lvl in cfg_salt['nodegroups'].items() %}
   {{ name }}: {{ lvl }}
-  {% endfor %}
-{% endif %}
+  {%- endfor %}
+{%- endif %}
 
 #####     Range Cluster settings     #####
 ##########################################