Update requirements.txt

requirements.txt

 Django==2.1.2
+django-auth-ldap==1.7.0
+django-autocomplete-light==3.3.2
 django-crispy-forms==1.7.2
-git+https://github.com/yourlabs/django-autocomplete-light.git#egg=django-autocomplete-light
-rules==2.0
-python-decouple==3.1
 ldap3==2.5.1
+psycopg2==2.7.7
+pyasn1==0.4.5
+pyasn1-modules==0.2.4
+python-decouple==3.1
 python-ldap==3.1.0
-django-auth-ldap==1.7.0
+pytz==2018.9
+rules==2.0