fix check for init scripts by replacing __EESSI_VERSION_DEFAULT__ ini init/eessi_defaults

Author: boegel

.github/workflows/tests_eessi_module.yml

@@ -84,6 +84,10 @@ jobs:
           cvmfs_config_package: https://github.com/EESSI/filesystem-layer/releases/download/latest/cvmfs-config-eessi_latest_all.deb
           cvmfs_http_proxy: DIRECT
           cvmfs_repositories: software.eessi.io
+
+      - name: Fix EESSI version in init scripts
+        run: |
+          sed -i "s/__EESSI_VERSION_DEFAULT__/${{matrix.EESSI_VERSION}}/g" init/eessi_defaults
               
       - name: Test for expected variables match between Lmod init script and original bash script
         run: |