[machineid] Fix up schema

- schema didn't allow recent (2019) configuration entries
- remove mention of deprecated key from example config

src/modules/machineid/machineid.conf

@@ -15,8 +15,6 @@ dbus: true
 # Whether /var/lib/dbus/machine-id should be a symlink to /etc/machine-id
 # (ignored if dbus is false, or if there is no /etc/machine-id to point to).
 dbus-symlink: true
-# this is a deprecated form of *dbus-symlink*
-symlink: true
 
 # Whether to create an entropy file
 entropy: false

src/modules/machineid/machineid.schema.yaml

@@ -4,6 +4,10 @@ $id: https://calamares.io/schemas/machineid
 additionalProperties: false
 type: object
 properties:
-    "systemd": { type: boolean, default: true }
-    "dbus": { type: boolean, default: true }
-    "symlink": { type: boolean, default: true }
+    systemd: { type: boolean, default: true }
+    dbus: { type: boolean, default: true }
+    "dbus-symlink": { type: boolean, default: true }
+    entropy: { type: boolean, default: false }
+    "entropy-copy": { type: boolean, default: false }
+    # Deprecated properties
+    symlink: { type: boolean, default: true }