Update dokken config and bump to Chef 13+

.kitchen.dokken.yml

@@ -33,20 +33,16 @@ platforms:
       intermediate_instructions:
           - RUN /usr/bin/apt-get update
           - RUN /usr/bin/apt-get install dnsutils -y
-    volumes:
-      - /sys/fs/cgroup:/sys/fs/cgroup:ro # required by systemd
 
   - name: centos-6
     driver:
       image: dokken/centos-6
+      pid_one_command: /sbin/init
 
   - name: centos-7
     driver:
       image: dokken/centos-7
-      platform: rhel
       pid_one_command: /usr/lib/systemd/systemd
-    volumes:
-      - /sys/fs/cgroup:/sys/fs/cgroup:ro # required by systemd
 
   - name: debian-8
     driver:
@@ -55,5 +51,4 @@ platforms:
       intermediate_instructions:
           - RUN /usr/bin/apt-get update
           - RUN /usr/bin/apt-get install dnsutils -y
-    volumes:
-        - /sys/fs/cgroup:/sys/fs/cgroup:ro # required by systemd
+

metadata.rb

@@ -8,11 +8,9 @@
 source_url       'https://github.com/dnsimple/chef-pdns'
 issues_url       'https://github.com/dnsimple/chef-pdns/issues'
 
-chef_version '>= 12.14'
+chef_version '>= 13'
 
 supports 'ubuntu', '>= 14.04'
 supports 'debian', '>= 8.0'
 supports 'centos', '>= 6.0'
 supports 'redhat', '>= 6.0'
-
-depends 'apt'