Test on the latest Debian in TK

Signed-off-by: Tim Smith <tsmith@chef.io>

.kitchen.yml

@@ -10,10 +10,10 @@ platforms:
   - name: centos-7.3
   - name: debian-7.11
     run_list: apt::default
-  - name: debian-8.6
+  - name: debian-8.7
     run_list: apt::default
   - name: fedora-25
-  - name: opensuse-leap-42.1
+  - name: opensuse-leap-42.2
   - name: ubuntu-14.04
     run_list: apt::default
   - name: ubuntu-16.04