Draft: Enable Loki as a replacement for Elasticsearch when `enable_loki` is set.

Note, it is not possible to have both Loki and Elasticsearch enabled, so enable_elasticsearch must be disabled, when enable_loki is enabled.

test/create-env.full.sh

@@ -8,7 +8,7 @@ cat > "$1/services.yml" <<EOF
 ---
 
 include:
-  - "../../services.yml.no-elasticsearch"
+  - "../../services.yml.default"
 
 ok:
   scheduling_group: backend
@@ -35,10 +35,4 @@ cat > "$1/passwords.yml" <<EOF
 
 EOF
 
-cat > "$1/group_vars/all/disable-elasticsearch.yml" <<EOF
----
-
-enable_elasticsearch: false
-EOF
-
 exit 0