.gitlab-ci-yml: Trigger dependent jobs in the test stage

Seeing as they were to run even in the event of any of the local
test jobs having failed, no real point in waiting until after the local
jobs have completed.

.gitlab-ci.yml

-stages:
-  - test
-  - posttest
-
 #
 # Test-job template
 #
@@ -75,9 +71,7 @@ test:perl5.30-mysql:
 # downstream branches) - but then again, we do not trigger dependent
 # builds for PRs on Travis either.
 .dependent_template:
-  stage: posttest
-  # We want this to run even if any test jobs fail
-  when: always
+  stage: test
   only:
     - master
     - /^release/\d+$/
@@ -87,7 +81,7 @@ test:perl5.30-mysql:
 # ensembl-rest; disabled for now because that repo a) hasn't got
 # GitLab-CI config yet, and b) is still on the list in
 # trigger-dependent-build.sh.
-.post:trigger_rest:
+.test:trigger_rest:
   extends: .dependent_template
   trigger:
     project: ensembl-gh-mirror/ensembl-rest
@@ -101,7 +95,7 @@ test:perl5.30-mysql:
 # is the Travis 'create_request' permission but Travis permissions are
 # generated from GitHub ones and it seems that in order to have
 # 'create_request' on the latter one requires 'write' on the former.
-post:trigger_travis:
+test:trigger_travis:
   extends: .dependent_template
   image: alpine:3.10
   variables: