Add users to OpenCL groups.

tasks/general/acct_mgmt/users.yml

@@ -25,6 +25,8 @@
     comment: Hyperling
     groups: 
       - sudo
+      - video
+      - render
     append: yes
     shell: "{{ ling_shell }}"
     create_home: yes

tasks/miner/acct_mgmt/mfn.yml

@@ -6,3 +6,7 @@
     name: mfn
     comment: Miner Forty Niner
     system: yes
+    groups: 
+      - video
+      - render
+    append: yes