ci(travis): default-debian-9-develop-py3 is buggy

Author: n-rodriguez

.travis.yml

@@ -30,12 +30,12 @@ services:
 #       Ref: https://github.com/saltstack-formulas/template-formula/issues/121
 env:
   matrix:
-    - INSTANCE: default-debian-9-develop-py3
+    # - INSTANCE: default-debian-9-develop-py3
     # - INSTANCE: default-ubuntu-1804-develop-py3
     # - INSTANCE: default-centos-7-develop-py3
     # - INSTANCE: default-fedora-29-develop-py3
     # - INSTANCE: default-opensuse-leap-15-develop-py3
-    # - INSTANCE: default-debian-9-2019-2-py3
+    - INSTANCE: default-debian-9-2019-2-py3
     - INSTANCE: default-ubuntu-1804-2019-2-py3
     - INSTANCE: default-centos-7-2019-2-py3
     # - INSTANCE: default-fedora-29-2019-2-py3