Add salt-minion and salt-master to telegraf

Change-Id: I6b80e66f720a9e238ba5a3dd5a1bac012fe2fe94

metadata/service/support.yml

     _orchestrate:
       priority: 20
     _support:
+      telegraf:
+        enabled: true
       collectd:
         enabled: false
       heka:

salt/meta/telegraf.yml

+{%- if pillar.salt is defined %}
+agent:
+  input:
+  {%- if pillar.salt.get('master', {}).get('enabled', False) or pillar.salt.get('minion', {}).get('enabled', False) %}
+    procstat:
+      process:
+        {%- if pillar.salt.get('master', {}).get('enabled', False)  %}
+        salt-master:
+          pattern: salt-master
+        {%- endif %}
+        {%- if pillar.salt.get('minion', {}).get('enabled', False)  %}
+        salt-minion:
+          pattern: salt-minion
+        {%- endif %}
+  {%- endif %}
+{%- endif %}