Enable gpg renderer by default

Change-Id: Ia3473ca46893f52080296a46105857f48f83d28e
Related-PROD: PROD-23612 (PROD:23612)
diff --git a/salt/master/single.yml b/salt/master/single.yml
index fbb32f2..25eaf56 100644
--- a/salt/master/single.yml
+++ b/salt/master/single.yml
@@ -17,4 +17,8 @@
       command_timeout: 10
       peer:
         '.*':
-          - x509.sign_remote_certificate
\ No newline at end of file
+          - x509.sign_remote_certificate
+      ext_pillars:
+        100_gpg_pillar_renderer:
+          module: gpg
+          params: {}