ipalib: move server-side plugins to ipaserver

Move the remaining plugin code from ipalib.plugins to ipaserver.plugins.

Remove the now unused ipalib.plugins package.

https://fedorahosted.org/freeipa/ticket/4739

Reviewed-By: David Kupka <dkupka@redhat.com>

ipaserver/plugins/ping.py

@@ -0,0 +1,70 @@
+# Authors:
+#   Rob Crittenden <rcritten@redhat.com>
+#
+# Copyright (C) 2010  Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from ipalib import Command
+from ipalib import output
+from ipalib import _
+from ipalib.plugable import Registry
+from ipapython.version import VERSION, API_VERSION
+
+__doc__ = _("""
+Ping the remote IPA server to ensure it is running.
+
+The ping command sends an echo request to an IPA server. The server
+returns its version information. This is used by an IPA client
+to confirm that the server is available and accepting requests.
+
+The server from xmlrpc_uri in /etc/ipa/default.conf is contacted first.
+If it does not respond then the client will contact any servers defined
+by ldap SRV records in DNS.
+
+EXAMPLES:
+
+ Ping an IPA server:
+   ipa ping
+   ------------------------------------------
+   IPA server version 2.1.9. API version 2.20
+   ------------------------------------------
+
+ Ping an IPA server verbosely:
+   ipa -v ping
+   ipa: INFO: trying https://ipa.example.com/ipa/xml
+   ipa: INFO: Forwarding 'ping' to server 'https://ipa.example.com/ipa/xml'
+   -----------------------------------------------------
+   IPA server version 2.1.9. API version 2.20
+   -----------------------------------------------------
+""")
+
+register = Registry()
+
+
+@register()
+class ping(Command):
+    __doc__ = _('Ping a remote server.')
+
+    has_output = (
+        output.summary,
+    )
+
+    def execute(self, **options):
+        """
+        A possible enhancement would be to take an argument and echo it
+        back but a fixed value works for now.
+        """
+        return dict(summary=u'IPA server version %s. API version %s' % (VERSION, API_VERSION))