fix(testing): Make sure tests run conditionally in branches and always on develop

.gitlab-ci.yml

@@ -213,9 +213,11 @@ test_api:
   image: $CI_REGISTRY/funkwhale/backend-test-docker:$PY_VER
   coverage: '/TOTAL\s*\d*\s*\d*\s*(\d*%)/'
   rules:
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event" || $CI_PIPELINE_SOURCE == "push"
       changes:
         - api/**/*
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+      when: always
 
 test_front:
   interruptible: true
@@ -241,9 +243,11 @@ test_front:
   tags:
     - docker
   rules:
-    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event" || $CI_PIPELINE_SOURCE == "push"
       changes:
         - front/**/*
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+      when: always
 
 build_docs:
   stage: build