Put smoke test deps in requirements.txt for Dependabot (#7806)

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+- package-ecosystem: pip
+  directory: "/testing/plugins_integration"
+  schedule:
+    interval: weekly
+    time: "03:00"
+  open-pull-requests-limit: 10
+  allow:
+  - dependency-type: direct
+  - dependency-type: indirect

testing/plugins_integration/requirements.txt

@@ -0,0 +1,15 @@
+anyio[curio,trio]==2.0.0
+django==3.1.1
+pytest-asyncio==0.14.0
+pytest-bdd==4.0.1
+pytest-cov==2.10.1
+pytest-django==3.10.0
+pytest-flakes==4.0.2
+pytest-html==2.1.1
+pytest-mock==3.3.1
+pytest-rerunfailures==9.1.1
+pytest-sugar==0.9.4
+pytest-trio==0.6.0
+pytest-twisted==1.13.2
+twisted==20.3.0
+pytest-xvfb==2.0.0

tox.ini

@@ -119,22 +119,7 @@ pip_pre=true
 download=true
 install_command=python -m pip --use-feature=2020-resolver install {opts} {packages}
 changedir = testing/plugins_integration
-deps =
+deps = -rtesting/plugins_integration/requirements.txt
-    anyio[curio,trio]
-    django
-    pytest-asyncio
-    pytest-bdd
-    pytest-cov
-    pytest-django
-    pytest-flakes
-    pytest-html
-    pytest-mock
-    pytest-rerunfailures
-    pytest-sugar
-    pytest-trio
-    pytest-twisted
-    twisted
-    pytest-xvfb
 setenv =
     PYTHONPATH=.
     # due to pytest-rerunfailures requiring 6.2+; can be removed after 6.2.0