Changes to remove neutron extensions that are not currently supported on Solaris.

This patch was developed in-house. Since it is Solaris-specific, it is not
suitable for upstream.

--- neutron-8.1.2/neutron/api/extensions.py.orig	2016-11-27 14:03:20.341214148 +0000
+++ neutron-8.1.2/neutron/api/extensions.py	2016-11-27 14:04:01.947497025 +0000
@@ -222,6 +222,10 @@
 
     def __init__(self, extension_manager):
         self.extension_manager = extension_manager
+        # List of extensions that are not supported currently on Solaris
+        self.ext_not_supp = ['auto-allocated-topology', 'l3-ha',
+                             'address-scope', 'extraroute', 'dns-integration',
+                             'dvr']
 
     @staticmethod
     def _translate(ext):
@@ -236,6 +240,9 @@
     def index(self, request):
         extensions = []
         for _alias, ext in six.iteritems(self.extension_manager.extensions):
+            if _alias in self.ext_not_supp:
+                LOG.debug("Extension '%s' not supported", _alias)
+                continue
             extensions.append(self._translate(ext))
         return dict(extensions=extensions)
 
@@ -245,6 +252,11 @@
         if not ext:
             raise webob.exc.HTTPNotFound(
                 _("Extension with alias %s does not exist") % id)
+
+        alias = ext.get_alias()
+        if alias in self.ext_not_supp:
+            raise webob.exc.HTTPNotFound(
+                _("Extension '%s' not supported") % alias)
         return dict(extension=self._translate(ext))
 
     def delete(self, request, id):