Documentation corrections

Per issues/1 change MySQLInnoDBClusterCharm  to ConfigurationAdapter in
the class method docstrings.
Update HACKING to remove features that already exist.
This change is a functional noop.

Closes issues/1

Change-Id: I7b43c3e137b44b93dcf501235c5b55975250019f

src/HACKING.md

@@ -9,18 +9,10 @@ You can find its source code here: <https://opendev.org/openstack/charm-mysql-in
 # To Do
 
 Actions:
- Backups
- Password change
- Pause Resume
- Service stop/start
+ Promote R/W
  Rejoin unit
    cluster.rejoinInstance()
- Bootstrap
  
 Cold Start
 
-Testing
-  Destruction of RW node testing
-  Juju leader changes
-
 Certificates Relation with Vault

src/lib/charm/openstack/mysql_innodb_cluster.py

@@ -38,7 +38,7 @@ def server_id(cls):
     """Determine this unit's server ID.
 
     :param cls: Class
-    :type cls: MySQLInnoDBClusterCharm class
+    :type cls: ConfigurationAdapter class
     :returns: String server ID
     :rtype: str
     """
@@ -53,7 +53,7 @@ def cluster_address(cls):
     Using the relation binding determine this unit's cluster address.
 
     :param cls: Class
-    :type cls: MySQLInnoDBClusterCharm class
+    :type cls: ConfigurationAdapter class
     :returns: Address
     :rtype: str
     """
@@ -68,7 +68,7 @@ def shared_db_address(cls):
     relation.
 
     :param cls: Class
-    :type cls: MySQLInnoDBClusterCharm class
+    :type cls: ConfigurationAdapter class
     :returns: Address
     :rtype: str
     """
@@ -83,7 +83,7 @@ def db_router_address(cls):
     relation.
 
     :param cls: Class
-    :type cls: MySQLInnoDBClusterCharm class
+    :type cls: ConfigurationAdapter class
     :returns: Address
     :rtype: str
     """