Add title to 'add' dialog for 'Topology' entity

To improve translation quality the title of 'Add' dialog should be
specified explicitly in the spec and should be an entire sentence.

Fixes: https://pagure.io/freeipa/issue/7707
Reviewed-By: Serhii Tsymbaliuk <stsymbal@redhat.com>

ipaserver/plugins/internal.py

@@ -1206,12 +1206,14 @@ class i18n_messages(Command):
                 "insufficient_domain_level" : _("Managed topology requires minimal domain level ${domainlevel}"),
             },
             "topologylocation": {
+                "add": _("Add IPA location"),
                 "remove": _("Remove IPA locations"),
                 "remove_servers": _(
                     "Remove IPA servers from IPA location '${primary_key}'"
                 ),
             },
             "topologysegment": {
+                "add": _("Add topology segment"),
                 "remove": _("Remove topology segments"),
             },
             "trust": {