feat: make ansible-lint happier

borgbackup.yml

@@ -7,8 +7,8 @@
 - hosts: borg_client
   diff: true
   roles:
-      - borg-client
+      - borg_client
 - hosts: borg_server
   diff: true
   roles:
-      - borg-server
+      - borg_server

munin.yml

@@ -3,9 +3,9 @@
 - hosts: all:!disabled_munin
   diff: true
   roles:
-    - munin-client
+    - munin_client
 
 - hosts: muninservers
   diff: true
   roles:
-    - munin-server
+    - munin_server

nut.yml

@@ -3,8 +3,8 @@
 - hosts: nut_server
   diff: true
   roles:
-      - nut-server
+      - nut_server
 - hosts: nut_client
   diff: true
   roles:
-      - nut-client
+      - nut_client