[services-openrc] Follow services-systemd configuration example

- Based on comments from #974, follow the configuration
   scheme from services-systemd, so with separate lists
   "services" and "disable". This ties it **slightly**
   less closely to the commands passed to rc-config.

src/modules/services-openrc/main.py

@@ -36,7 +36,12 @@ class OpenrcController:
 
     def __init__(self):
         self.root = libcalamares.globalstorage.value('rootMountPoint')
-        self.services = libcalamares.job.configuration.get('services', [])
+
+        # Translate the entries in the config to the actions passed to rc-config
+        self.services = dict()
+        self.services["add"] = libcalamares.job.configuration.get('services', [])
+        self.services["del"] = libcalamares.job.configuration.get('disable', [])
+
         self.initdDir = libcalamares.job.configuration['initdDir']
         self.runlevelsDir = libcalamares.job.configuration['runlevelsDir']
 

src/modules/services-openrc/services-openrc.conf

@@ -13,25 +13,25 @@ initdDir: /etc/init.d
 # runlevelsDir: holds the runlevels directory location
 runlevelsDir: /etc/runlevels
 
-# services: each subkey of *services* is an action to take;
-# supported actions are "add" and "del". The each subkey
-# has a list of entries as value, and each entry has two
-# fields:
+# services: a list of entries to **enable**
+# disable: a list of entries to **disable**
+#
+# Each entry has two fields:
 #   - name: the service name
 #   - runlevel: can hold any runlevel present on the target system;
 #     if no runlevel is provided, "default" is assumed.
 #
-# # Example services:
+# # Example services and disable settings:
 # # - add foo1 to default
 # # - add foo2 to nonetwork
 # # - remove foo3 from default
 # services:
-#     add:
 #     - name: foo1
 #     - name: foo2
 #       runlevel: nonetwork
-#     del:
+# disable:
 #     - name: foo3
 #       runlevel: default
 services: []
+disable: []