Change DNS installer code to use passed in api

Fixes a number of places where api was not passed around internally.
Also allows to install dns in replica promotion which requires an
alternative api to be created with the right configuration.

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

ipaserver/install/server/replicainstall.py

@@ -776,8 +776,6 @@ def promote_check(installer):
         raise NotImplementedError
     if options.setup_kra:
         raise NotImplementedError
-    if options.setup_dns:
-        raise NotImplementedError
 
     tasks.check_selinux_status()
 
@@ -1040,7 +1038,6 @@ def promote_check(installer):
         raise RuntimeError("CA cert file is not available.")
 
     installer._ca_enabled = ca_enabled
-    installer._remote_api = remote_api
     installer._fstore = fstore
     installer._sstore = sstore
     installer._config = config
@@ -1088,6 +1085,8 @@ def promote(installer):
     # or certmonger will fail to contact the peer master
     install_http_certs(config, fstore)
 
+    ldapi_uri = installutils.realm_to_ldapi_uri(config.realm_name)
+
     # Create the management framework config file
     gopts = [
         ipaconf.setOption('host', config.host_name),
@@ -1095,8 +1094,7 @@ def promote(installer):
         ipaconf.setOption('xmlrpc_uri',
                           'https://%s/ipa/xml' %
                           ipautil.format_netloc(config.host_name)),
-        ipaconf.setOption('ldap_uri',
-                          installutils.realm_to_ldapi_uri(config.realm_name)),
+        ipaconf.setOption('ldap_uri', ldapi_uri),
         ipaconf.setOption('mode', 'production'),
         ipaconf.setOption('enable_ra', 'True'),
         ipaconf.setOption('ra_plugin', 'dogtag'),
@@ -1155,10 +1153,6 @@ def promote(installer):
         dogtag_service = services.knownservices[dogtag_constants.SERVICE_NAME]
         dogtag_service.restart(dogtag_constants.PKI_INSTANCE_NAME)
 
-    if options.setup_dns:
-        api.Backend.ldap2.connect(autobind=True)
-        dns.install(False, True, options)
-
     # Restart httpd to pick up the new IPA configuration
     service.print_msg("Restarting the web server")
     http.restart()
@@ -1169,6 +1163,16 @@ def promote(installer):
 
     promote_sssd(config.host_name)
 
+    # Switch API so that it uses the new servr configuration
+    server_api = create_api(mode=None)
+    server_api.bootstrap(in_server=True, context='installer')
+    server_api.finalize()
+
+    if options.setup_dns:
+        server_api.Backend.rpcclient.connect()
+        server_api.Backend.ldap2.connect(autobind=True)
+        dns.install(False, True, options, server_api)
+
     # Everything installed properly, activate ipa service.
     services.knownservices.ipa.enable()