patchwork: update for django 1.11 and fix versions for ldap

The rest of the code is good to go for django 1.11, so let's make
it official.  Also we need to set version for an older
django-auth-ldap until we are ready to move to python3.

Change-Id: I5323259147658a7b0118c1292653394266a474cf
1 file changed