requirements: Upgrade pyldap to latest version.

The pyldap fork was merged back into python-ldap, and released as
python-ldap 3.0.0; `pyldap` is now just a wrapper package that depends
on python-ldap.

Fixes #8912.

requirements/common.in

@@ -173,9 +173,6 @@ pyoembed==0.1.2
 # Used for Hesiod lookups, etc.
 py3dns==3.1.0
 
-# Needed for LDAP integration
-pyldap==2.4.37
-
 # Install Python Social Auth
 social-auth-app-django==2.1.0
 

requirements/dev.txt

@@ -120,7 +120,7 @@ pydispatcher==2.0.5       # via scrapy
 pyflakes==1.6.0
 pygments==2.2.0
 pyjwt==1.6.1
-pyldap==2.4.37
+pyldap==3.0.0.post1       # via django-auth-ldap, fakeldap
 pylibmc==1.5.2
 pyoembed==0.1.2
 pyopenssl==17.3.0         # via ndg-httpsclient, scrapy, service-identity
@@ -129,6 +129,7 @@ pysocks==1.6.7            # via twilio
 python-dateutil==2.6.1
 python-digitalocean==1.13.2
 python-gcm==0.4
+python-ldap==3.0.0        # via pyldap
 python-twitter==3.4.1
 python3-openid==3.1.0     # via social-auth-core
 pytz==2018.3

requirements/prod.txt

@@ -85,13 +85,14 @@ pycparser==2.18           # via cffi
 pycrypto==2.6.1
 pygments==2.2.0
 pyjwt==1.6.1
-pyldap==2.4.37
+pyldap==3.0.0.post1       # via django-auth-ldap
 pylibmc==1.5.2
 pyoembed==0.1.2
 pyopenssl==17.3.0         # via ndg-httpsclient
 pysocks==1.6.7            # via twilio
 python-dateutil==2.6.1
 python-gcm==0.4
+python-ldap==3.0.0        # via pyldap
 python-twitter==3.4.1
 python3-openid==3.1.0     # via social-auth-core
 pytz==2018.3

version.py

@@ -8,4 +8,4 @@ ZULIP_VERSION = "1.7.1+git"
 # Typically, adding a dependency only requires a minor version bump, and
 # removing a dependency requires a major version bump.
 
-PROVISION_VERSION = '17.8'
+PROVISION_VERSION = '17.9'