ci: use the test opam repo for expe current only

.gitlab-ci.yml

@@ -5,7 +5,7 @@ stages:
 
 
 before_script:
-  - opam repo add verimag-repo "http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/test/opam-repository"
+  - opam repo add verimag-repo "http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/opam-repository"
   - sudo apt-get update && sudo apt-get install -y zathura graphviz bc time 
 
 # Specify the  packages version numbers  so that it  (hopefully) never
@@ -29,6 +29,9 @@ expe-sasa.4.0.3:
 expe-current:
   image: ocaml/opam2:ubuntu-18.04
   stage: test
+  before_script:
+    - opam repo add verimag-repo "http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/test/opam-repository"
+    - sudo apt-get update && sudo apt-get install -y zathura graphviz bc time 
   script:
     - opam depext -y sasa
     - opam install -y sasa