Support certificate login after installation and upgrade

Add necessary steps which set SSSD and set SELinux boolean during
installation or upgrade. Also create new endpoint in apache for
login using certificates.

https://pagure.io/freeipa/issue/6225

Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Reviewed-By: Petr Vobornik <pvoborni@redhat.com>
Reviewed-By: David Kupka <dkupka@redhat.com>

ipaserver/install/httpinstance.py

@@ -53,6 +53,7 @@ SELINUX_BOOLEAN_SETTINGS = dict(
     httpd_can_network_connect='on',
     httpd_manage_ipa='on',
     httpd_run_ipa='on',
+    httpd_dbus_sssd='on',
 )
 
 HTTPD_USER = constants.HTTPD_USER

ipaserver/install/server/upgrade.py

@@ -23,6 +23,7 @@ from ipalib.install import certmonger, sysrestore
 import SSSDConfig
 import ipalib.util
 import ipalib.errors
+from ipaclient.install.client import sssd_enable_service
 from ipaplatform import services
 from ipaplatform.tasks import tasks
 from ipapython import ipautil, version, certdb
@@ -1771,6 +1772,10 @@ def upgrade_configuration():
 
     set_sssd_domain_option('ipa_server_mode', 'True')
 
+    sssdconfig = SSSDConfig.SSSDConfig()
+    sssdconfig.import_config()
+    sssd_enable_service(sssdconfig, 'ifp')
+
     krb = krbinstance.KrbInstance(fstore)
     krb.fqdn = fqdn
     krb.realm = api.env.realm