[TASK] Remove kitchen platform Debian 7, update Debian 8 and add Debian 9

Author: sgrossberndt

.kitchen.dokken.yml

@@ -35,13 +35,5 @@ platforms:
       - RUN /usr/bin/apt-get update
       - RUN /usr/bin/apt-get install apt-transport-https lsb-release procps net-tools -y
 
-# comment this out, if Debian 7 is not needed
-- name: debian-7
-  driver:
-    image: debian:7
-    intermediate_instructions:
-      - RUN /usr/bin/apt-get update
-      - RUN /usr/bin/apt-get install apt-transport-https lsb-release procps net-tools -y
-
 # suites are taken from .kitchen.yml usually
 # suites:

.kitchen.yml

@@ -6,8 +6,8 @@ provisioner:
   name: chef_zero
 
 platforms:
-  - name: debian-7.11
-  - name: debian-8.9
+  - name: debian-8.11
+  - name: debian-9.9
 
 suites:
   - name: default