Merge "Use the pip installed version of requests with Fedora"

tools/fixup_stuff.sh

@@ -134,6 +134,31 @@ if is_fedora; then
             sudo systemctl start iptables
         fi
     fi
+
+    if  [[ "$os_RELEASE" -ge "21" ]]; then
+        # requests ships vendored version of chardet/urllib3, but on
+        # fedora these are symlinked back to the primary versions to
+        # avoid duplication of code on disk.  This is fine when
+        # maintainers keep things in sync, but since devstack takes
+        # over and installs later versions via pip we can end up with
+        # incompatible versions.
+        #
+        # The rpm package is not removed to preserve the dependent
+        # packages like cloud-init; rather we remove the symlinks and
+        # force a re-install of requests so the vendored versions it
+        # wants are present.
+        #
+        # Realted issues:
+        # https://bugs.launchpad.net/glance/+bug/1476770
+        # https://bugzilla.redhat.com/show_bug.cgi?id=1253823
+
+        base_path=/usr/lib/python2.7/site-packages/requests/packages
+        if [ -L $base_path/chardet -o -L $base_path/urllib3 ]; then
+            sudo rm -f /usr/lib/python2.7/site-packages/requests/packages/{chardet,urllib3}
+            # install requests with the bundled urllib3 to avoid conflicts
+            pip_install --upgrade --force-reinstall requests
+        fi
+    fi
 fi
 
 # The version of pip(1.5.4) supported by python-virtualenv(1.11.4) has