Add Telegraf SSL support

Change-Id: Ic00f217a981d9d9724415faf0c06d1ad48f58745
PROD-related: PROD-28066
diff --git a/defaults/salt/init.yml b/defaults/salt/init.yml
index e71f560..a720189 100644
--- a/defaults/salt/init.yml
+++ b/defaults/salt/init.yml
@@ -55,3 +55,5 @@
     - '@wheel'   # to allow access to all wheel modules
     - '@runner'  # to allow access to all runner modules
     - '@jobs'    # to allow access to the jobs runner and/or wheel mo
+
+    salt_minion_ca_authority: salt_master_ca