Allow ZAPI over IPv6

When an IPv6 literal is specified in manila.conf for the
netapp_hostname option, automatically URL-escape it.

Closes-bug: 1730509

Change-Id: Id55e870066b6a669da83aa6a96f74ea76d6103bd

manila/share/drivers/netapp/dataontap/client/api.py

@@ -324,8 +324,10 @@ class NaServer(object):
         return processed_response.get_child_by_name('results')
 
     def _get_url(self):
-        return '%s://%s:%s/%s' % (self._protocol, self._host, self._port,
-                                  self._url)
+        host = self._host
+        if ':' in host:
+            host = '[%s]' % host
+        return '%s://%s:%s/%s' % (self._protocol, host, self._port, self._url)
 
     def _build_opener(self):
         if self._auth_style == NaServer.STYLE_LOGIN_PASSWORD:

releasenotes/notes/bug-1730509-netapp-ipv6-hostname-39abc7f40d48c844.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+    IPv6 addresses are handled corrected when specified
+    for the netapp_server_hostname driver option.