Sync latest network_utils module from Oslo

Syncs the latest network_utils from Oslo to help simplify the fix
needed for bug #1216247. Also adds network_utils to
openstack-common.conf.

This also includes the following commits to network_utils:

897aa7c urlsplit issues with IPv6 addresses in python26
35dc1d7 py3kcompat: remove
12bcdb7 Remove vim header
4c22556 Use py3kcompat urlutils functions instead of urlparse
0bf03b7 Add network_utils.urlsplit
e456727 Remove useless logging in networks_utils
7119e29 Enable hacking H404 test.

Change-Id: I63325c9b677c2192d24e7eb73adac272bffd4e0b

glance/openstack/common/network_utils.py

@@ -1,5 +1,3 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
 # Copyright 2012 OpenStack Foundation.
 # All Rights Reserved.
 #
@@ -19,15 +17,22 @@
 Network-related utilities and helper functions.
 """
 
-from glance.openstack.common import log as logging
+# TODO(jd) Use six.moves once
+# https://bitbucket.org/gutworth/six/pull-request/28
+# is merged
+try:
+    import urllib.parse
+    SplitResult = urllib.parse.SplitResult
+except ImportError:
+    import urlparse
+    SplitResult = urlparse.SplitResult
 
-
-LOG = logging.getLogger(__name__)
+from six.moves.urllib import parse
 
 
 def parse_host_port(address, default_port=None):
-    """
-    Interpret a string as a host:port pair.
+    """Interpret a string as a host:port pair.
+
     An IPv6 address MUST be escaped if accompanied by a port,
     because otherwise ambiguity ensues: 2001:db8:85a3::8a2e:370:7334
     means both [2001:db8:85a3::8a2e:370:7334] and
@@ -67,3 +72,37 @@ def parse_host_port(address, default_port=None):
             port = default_port
 
     return (host, None if port is None else int(port))
+
+
+class ModifiedSplitResult(SplitResult):
+    """Split results class for urlsplit."""
+
+    # NOTE(dims): The functions below are needed for Python 2.6.x.
+    # We can remove these when we drop support for 2.6.x.
+    @property
+    def hostname(self):
+        netloc = self.netloc.split('@', 1)[-1]
+        host, port = parse_host_port(netloc)
+        return host
+
+    @property
+    def port(self):
+        netloc = self.netloc.split('@', 1)[-1]
+        host, port = parse_host_port(netloc)
+        return port
+
+
+def urlsplit(url, scheme='', allow_fragments=True):
+    """Parse a URL using urlparse.urlsplit(), splitting query and fragments.
+    This function papers over Python issue9374 when needed.
+
+    The parameters are the same as urlparse.urlsplit.
+    """
+    scheme, netloc, path, query, fragment = parse.urlsplit(
+        url, scheme, allow_fragments)
+    if allow_fragments and '#' in path:
+        path, fragment = path.split('#', 1)
+    if '?' in path:
+        path, query = path.split('?', 1)
+    return ModifiedSplitResult(scheme, netloc,
+                               path, query, fragment)

openstack-common.conf

@@ -11,6 +11,7 @@ module=jsonutils
 module=local
 module=lockutils
 module=log
+module=network_utils
 module=policy
 module=strutils
 module=test