Y client: Don't allow master_nodes and name to be present in options

Because list of masters and cluster name must be already present in
netloc and path. Previously e.g.

	neo://α,β,γ/db?master_nodes=a,b,c"

would mean to use master nodes {a,b,c} not {α,β,γ}. Now it is treated as
invalid URI to remove ambiguity. Same for cluster name.

neo/client/zodburi.py

@@ -44,6 +44,8 @@ def neo_zconf_options():
     options = {k for k, _ in neo_storage_zconf}
     assert 'master_nodes' in options
     assert 'name' in options
+    options.remove('master_nodes') # comes in netloc
+    options.remove('name')         # comes in path
     for opt in _credopts:
         assert opt in options, opt
 

neo/tests/client/testZODBURI.py

@@ -71,6 +71,10 @@ class ZODBURITests(unittest.TestCase):
         # master/db not fully specified
         self.assertRaises(ValueError, _resolve_uri, "neo://master")
 
+        # master_nodes and name provided in option (they come in netloc and path)
+        self.assertRaises(ValueError, _resolve_uri, "neo://master/db?master_nodes=a,b,c")
+        self.assertRaises(ValueError, _resolve_uri, "neo://master/db?name=zzz")
+
         # option that corresponds to credential provided in query
         self.assertRaises(ValueError, _resolve_uri, "neos://master/db?ca=123")