cli: Do interactive prompting after a context is created

Some commands require a connection for interactive prompting.
Prompt after the connection is created.

Option parsing is still done before connecting so that help
can be printed out without a Kerberos ticket.

https://fedorahosted.org/freeipa/ticket/3453

ipalib/cli.py

@@ -1039,9 +1039,8 @@ class cli(backend.Executioner):
         cmd = self.Command[name]
         return cmd
 
-    def argv_to_keyword_arguments(self, cmd, argv):
+    def process_keyword_arguments(self, cmd, kw):
         """Get the keyword arguments for a Command"""
-        kw = self.parse(cmd, argv)
         if self.env.interactive:
             self.prompt_interactively(cmd, kw)
         if self.env.interactive:
@@ -1061,10 +1060,11 @@ class cli(backend.Executioner):
         if cmd is None:
             return
         name = cmd.name
-        kw = self.argv_to_keyword_arguments(cmd, argv[1:])
+        kw = self.parse(cmd, argv[1:])
         if not isinstance(cmd, frontend.Local):
             self.create_context()
         try:
+            kw = self.process_keyword_arguments(cmd, kw)
             result = self.execute(name, **kw)
             if callable(cmd.output_for_cli):
                 for param in cmd.params():

tests/test_cmdline/test_cli.py

@@ -18,7 +18,8 @@ class TestCLIParsing(object):
         executioner = api.Backend.cli
 
         cmd = executioner.get_command(argv)
-        kw_got = executioner.argv_to_keyword_arguments(cmd, argv[1:])
+        kw_got = executioner.parse(cmd, argv[1:])
+        kw_got = executioner.process_keyword_arguments(cmd, kw_got)
         util.assert_deepequal(expected_command_name, cmd.name, 'Command name')
         util.assert_deepequal(kw_expected, kw_got)