Integrate gitlab-ci/fix_credentials_cache

--

Commit: seco-ne/yocto/infrastructure/gitlab-ci@cbf168eb

build:credentials: Fix error when storing credentials in cache

The credentials helper wasn't storing the credentials in the cache.
Seemingly, the echo added whitespaces at the beginning of the lines
which can't be interpreted by the git credential approve command.
Also the USERNAME was renamed to TOKEN_USER because the variable is
already filled with the system users name.

.gitlab-ci @ cbf168eb

-Subproject commit d09e3a9655559495e9aeff194e3ea44a2acdb315
+Subproject commit cbf168ebd86b09d06b8d7d7e559e5bcedd0607dd

.gitlab-ci.yml

@@ -4,9 +4,9 @@
 # ---------------------------------------------------------------------------------------
 include:
   - project: '${CI_PROJECT_ROOT_NAMESPACE}/yocto/infrastructure/gitlab-ci'
-    ref: d09e3a9655559495e9aeff194e3ea44a2acdb315
+    ref: cbf168ebd86b09d06b8d7d7e559e5bcedd0607dd
     file: 'manifest-integration.yml'
 
 variables:
-  GITLAB_CI_REVISION: d09e3a9655559495e9aeff194e3ea44a2acdb315
+  GITLAB_CI_REVISION: cbf168ebd86b09d06b8d7d7e559e5bcedd0607dd
   BB_RECIPE_NAME: seco-show-demo