Drop Django 1.11 support

Django 1.11 ends its extended support in April 2020 (which is before
Ussuri release), so horizon drops Django 1.11 support in Ussuri.

tox envs for non-primary Django versions are no longer needed in tox.ini
as testing environments for non-primary Django versions are setup in
the zuul jobs now.

horizon>=17.1.0 is required to use Django 2.2. requirements.txt and
lower-constraints.txt are updated accordingly. for more info. please
refer [1].
Depends-On: https://review.opendev.org/#/c/700733/
[1] https://etherpad.openstack.org/p/Enable_Django22_support_in_Horizon_Plugin

Change-Id: If7c7ce79594449637655c4832db50c2c243ce1c0

lower-constraints.txt

@@ -12,7 +12,7 @@ cryptography==2.1
 debtcollector==1.2.0
 decorator==3.4.0
 deprecation==1.0
-Django==1.11
+Django==2.2
 django-appconf==1.0.2
 django-babel==0.5.1
 django-compressor==2.0
@@ -26,7 +26,7 @@ flake8==2.5.5
 futurist==1.2.0
 greenlet==0.4.10
 hacking==0.12.0
-horizon==13.0.0
+horizon==17.1.0
 idna==2.6
 iso8601==0.1.11
 Jinja2==2.10
@@ -62,7 +62,7 @@ oslo.serialization==2.18.0
 oslo.service==1.24.0
 oslo.utils==3.33.0
 oslotest==3.2.0
-osprofiler==1.4.0
+osprofiler==2.3.0
 Paste==2.0.2
 PasteDeploy==1.5.0
 pbr==2.0.0
@@ -84,7 +84,7 @@ python-barbicanclient==4.5.2
 python-cinderclient==3.3.0
 python-dateutil==2.5.3
 python-glanceclient==2.8.0
-python-keystoneclient==3.8.0
+python-keystoneclient==3.22.0
 python-mimeparse==1.6.0
 python-neutronclient==6.7.0
 python-novaclient==9.1.0

requirements.txt

@@ -2,11 +2,11 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-horizon>=14.0.0.0b3 # Apache-2.0
+horizon>=17.1.0 # Apache-2.0
 Babel!=2.4.0,>=2.3.4 # BSD
 openstacksdk>=0.24.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 python-barbicanclient>=4.5.2 # Apache-2.0
-python-keystoneclient>=3.8.0 # Apache-2.0
+python-keystoneclient>=3.22.0 # Apache-2.0
 six>=1.10.0 # MIT

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.5.0
-envlist = py3,py3-{dj111,dj22},pep8,eslint,karma
+envlist = py3,pep8,eslint,karma
 skipsdist = True
 
 [testenv]
@@ -17,8 +17,6 @@ deps = -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/
 whitelist_externals = npm
                       bash
 commands =
-   dj111: pip install django>=1.11,<2
-   dj22: pip install django>=2.2,<2.3
    python manage.py test octavia_dashboard --settings=octavia_dashboard.tests.settings
 
 [testenv:pep8]