Integrate gitlab-ci/share-yaml-code-for-manifest-integration and 2 more

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@686323c6

Remove yaml redundancies in manifest-integration

Leave all common yaml parts in manifest-integration.yml and add
manifest-integration-yocto.yml and manifest-integration-ci-test.yml
containing the different variable assignments for each environment.

The repos including these files have to be updated with the new names.

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@4c751096

Harmonize manifest-integration yaml files for yocto and ci-test

This is the first step for reducing code duplicates.

BCS 746-000807

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@c877f9c9

retrigger: Allow to specify the manifest's remote identifier in a variable

Costum manifest may override this variable

.gitlab-ci @ 686323c6

-Subproject commit d9660a80edc09242d507077a4059531a057f3184
+Subproject commit 686323c648881a4fa0f3f8ae6e305d17337eecf3

.gitlab-ci.yml

@@ -4,5 +4,5 @@
 # ---------------------------------------------------------------------------------------
 include:
   - project: '${CI_PROJECT_ROOT_NAMESPACE}/yocto/infrastructure/gitlab-ci'
-    ref: d9660a80edc09242d507077a4059531a057f3184
-    file: 'manifest-integration.yml'
+    ref: 686323c648881a4fa0f3f8ae6e305d17337eecf3
+    file: 'manifest-integration-yocto.yml'