adapt comments

Author: maltesander

deploy/config-spec/properties.yaml

@@ -216,11 +216,11 @@ properties:
           value: "/hbase"
       roles:
         - name: "master"
-          required: true # TODO: this could be false?
-        - name: "regionserver"
           required: true
+        - name: "regionserver"
+          required: true # this can be false (only required for master) - kept for compatibility (avoid restarts)
         - name: "restserver"
-          required: true # TODO: this could be false?
+          required: true # this can be false (only required for master) - kept for compatibility (avoid restarts)
       asOfVersion: "0.0.0"
       description: "The directory shared by region servers and into which HBase persists. The URL should be 'fully-qualified' to include the filesystem scheme. For example, to specify the HDFS directory '/hbase' where the HDFS instance's namenode is running at namenode.example.org on port 9000, set this value to: hdfs://namenode.example.org:9000/hbase. By default, we write to whatever ${hbase.tmp.dir} is set too -- usually /tmp -- so change this configuration or else all data will be lost on machine restart."