ansible-playbooks/general#90 Change group names and adjust Ansible config for version 2.8

tasks/spideroak.yml

@@ -47,7 +47,7 @@
 
 - name: "Add MySQL Backups to SpiderOak"
   shell: SpiderOakONE --include-dir=/var/backups/mysql
-  when: groups['dbserver-mysql'] is defined and inventory_hostname in groups['dbserver-mysql']
+  when: groups['dbserver_mysql'] is defined and inventory_hostname in groups['dbserver_mysql']
 
 - name: "Start SpiderOak"
   service: