Add a new setting to force CLI commands to use the localhost for xmlrpc

The default in cobbler is to use the server setting for xmlrpc
connections.  Since the server setting could be a remote host this can
cause commands to fail.  By applying this setting all commands will be
force to use the localhost address.

cobbler/settings.py

@@ -102,6 +102,7 @@
     "scm_track_enabled"           : 0,
     "scm_track_mode"              : "git",
     "server"                      : "127.0.0.1",
+    "client_use_localhost"        : "",
     "snippetsdir"                 : "/var/lib/cobbler/snippets",
     "template_remote_kickstarts"  : 0,
     "virt_auto_boot"              : 0,

cobbler/utils.py

@@ -2000,7 +2000,11 @@ def local_get_cobbler_api_url():
     except:
        traceback.print_exc()
        raise CX("/etc/cobbler/settings is not a valid YAML file")
-    return "http://%s:%s/cobbler_api" % (data.get("server","127.0.0.1"),data.get("http_port","80"))
+
+    if data.get("client_use_localhost", False):
+      return "http://%s:%s/cobbler_api" % ("127.0.0.1",data.get("http_port","80"))
+    else:
+      return "http://%s:%s/cobbler_api" % (data.get("server","127.0.0.1"),data.get("http_port","80"))
 
 def get_ldap_template(ldaptype=None):
     """

config/settings

@@ -341,6 +341,12 @@ scm_track_mode: "git"
 # of the manpage for how that works.
 server: 127.0.0.1
 
+# If set to 1, all commands will be forced to use the localhost address
+# instead of using the above value which can force commands like
+# cobbler sync to open a connection to a remote address if one is in the
+# configuration and would traceback.
+client_use_localhost: 0
+
 # this is a directory of files that cobbler uses to make
 # templating easier.  See the Wiki for more information.  Changing
 # this directory should not be required.