Allow flexibility to define a target submodule and its branch

This allows testing submodule feature branches in builds and deploys by abstracting the branch names that need to be checked out, into gitlab CICD vars.

.gitlab-ci.yml

@@ -38,8 +38,28 @@ build_packer:
     name: $TARGET_ENV
   tags: [build]
   script:
-    - cd CRI_XCBC && git checkout dev && git pull && cd ..
-    - cd CRI_Cluster_Monitor && git checkout master && git pull && cd ..
+    - git submodule update --remote
+    - declare -A hashmap=(["CRI_XCBC"]="${cluster_ansible_feat_req_ids}" ["CRI_Cluster_Monitor"]="${clustermon_ansible_feat_req_ids}")
+    - |
+        for each_repo in ${!hashmap[@]}
+          do
+            echo "Inside first for loop cd to: $each_repo"
+            cd $each_repo
+            git config user.name "$GITLAB_USER_NAME"
+            git config user.email "$GITLAB_USER_EMAIL"
+            echo "Done cd to: $each_repo"
+            echo "Checking out pull requests ${hashmap[$each_repo]}"
+            git checkout -B test_feature_requests
+            git fetch origin +refs/pull/*/merge:refs/remotes/origin/pr/*
+            for each_feature in ${hashmap[$each_repo]}
+              do
+                for num in ${each_feature[@]}
+                  do
+                    git merge --no-ff origin/pr/$num
+                  done
+              done
+          cd ..
+          done
     - export PKR_VAR_build_image_name="xdmod-$TARGET_ENV-$(TZ=America/Chicago date +%Y-%m-%dT%H%M%S)"
     - 'sed -i -E "s/(enable_selinix_permissive: ).*/\1true/" CRI_Cluster_Monitor/group_vars/all'
     - 'sed -i -E "s/(enable_simplesaml: ).*/\1true/" CRI_Cluster_Monitor/group_vars/all'