Add back installation of wheels but keep test commented.

.gitlab/ci/release/pip.gitlab-ci.yml

@@ -26,13 +26,13 @@ release:pip:ubuntu:
     - echo "Reinstalling each found wheels = ${WHEELS}"
 
     # This test should be done in relevent package.
-    # - >
-    #   for wheel in $WHEELS; do # not sure if a for loop is needed here but just in case multiple wheels are found
-    #     python -m pip install --force-reinstall $wheel[test]
-    #     python -m pip list
-    #     cd $CI_PROJECT_NAME # entering package so python doesn't import local package and in
-    #     python -m pytest unit_tests/*
-    #   done
+    - >
+      for wheel in $WHEELS; do # not sure if a for loop is needed here but just in case multiple wheels are found
+        python -m pip install --force-reinstall $wheel[test]
+        python -m pip list
+        cd $CI_PROJECT_NAME # entering package so python doesn't import local package and in
+        # python -m pytest unit_tests/*
+      done
 
 deploy:pip:ubuntu:
   extends: