general: stop supporting django 1.8 (#32728)

Jenkinsfile

@@ -23,7 +23,7 @@ pipeline {
             steps {
                 script {
                     if (env.JOB_NAME == 'chrono' && env.GIT_BRANCH == 'origin/master') {
-                        sh 'sudo -H -u eobuilder /usr/local/bin/eobuilder chrono'
+                        sh 'sudo -H -u eobuilder /usr/local/bin/eobuilder -d stretch chrono'
                     }
                 }
             }

debian/control

@@ -9,7 +9,7 @@ X-Python-Version: >= 2.7
 Package: python-chrono
 Architecture: all
 Depends: ${misc:Depends}, ${python:Depends},
-    python-django (>= 1.8),
+    python-django (>= 1:1.11),
     python-gadjo,
     python-requests
 Recommends: python-django-mellon

setup.py

@@ -147,7 +147,7 @@ setup(
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 3',
     ],
-    install_requires=['django>=1.8, <1.12',
+    install_requires=['django>=1.11, <1.12',
         'gadjo',
         'djangorestframework>=3.1, <3.7',
         'django-jsonfield >= 0.9.3',

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py2-coverage-django18-pylint,{py2,py3}-coverage-django111
+envlist = py2-coverage-pylint,py3-coverage
 toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/chrono/{env:BRANCH_NAME:}
 
 [testenv]
@@ -11,8 +11,6 @@ setenv =
   CHRONO_SETTINGS_FILE=tests/settings.py
   coverage: COVERAGE=--junitxml=test_results.xml --cov-report xml --cov-report html --cov=chrono/
 deps =
-  django18: django>=1.8,<1.9
-  django111: django>=1.11,<1.12
   pytest-cov
   pytest-django
   pytest>=3.3.0,<4