MAINT: use correct branch in pipeline

.docker/install_cpplib.sh

@@ -5,8 +5,10 @@ cd caosdb-cpplib
 # check if there is a crooesponding cpp branch. Use the default branch
 # if there isn't.
 if (git show-ref --verify --quiet refs/heads/$CI_COMMIT_REF_NAME) ; then
+    echo "git checkout $CI_COMMIT_REF_NAME"
     git checkout $CI_COMMIT_REF_NAME
 else
+    echo "git checkout $CPP_DEFAULT_BRANCH"
     git checkout $CPP_DEFAULT_BRANCH
 fi
 git submodule update --init --recursive

.gitlab-ci.yml

@@ -26,7 +26,7 @@ variables:
 
   # The defalt branch to use with caosdb-cpplib
   # TODO: Change back to dev once f-consolidate-c has been merged.
-  CPP_DEFAULT_BRANCH: f-consolidate-c
+  CPP_DEFAULT_BRANCH: dev
 
 image: $JULIALIB_REGISTRY_IMAGE