Fix warnings raised by URI 1.0.1

Related to:
https://www.github.com/ruby/uri/issues/125
ManageIQ/manageiq#23260

Author: jrafanie

lib/VMwareWebService/MiqVimDataStore.rb

@@ -317,6 +317,6 @@ def encode_datastore_url(file_path, ds_name)
   end
 
   def encode_path_url(path)
-    URI::DEFAULT_PARSER.escape(path, /[^#{URI::PATTERN::UNRESERVED}]/o)
+    URI::RFC2396_Parser.escape(path, /[^#{URI::RFC2396_Parser::PATTERN::UNRESERVED}]/o)
   end
 end # module MiqVimDataStore