adding resource group.

When many pipelines run at the same time, could cause some collision, false results, or not passing tests.
Restructured CI to avoid this from happening.

.gitlab/test.yml

 workflow:
-  rules:
     - if: $CI_PIPELINE_SOURCE == "parent_pipeline"
 
 .test-core: &test-core
@@ -11,8 +10,15 @@ workflow:
     TEST_HOST: localhost
     TEST_PORT: 8000
 
+.manual-run-not-allowed: &manual-run-not-allowed
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "web"'
+      when: never
+    - when: on_success
+
 up-test-env-job:
   <<: *test-core
+  <<: *manual-run-not-allowed
   before_script:
     # check that no other unrelated Netbox is up on destination port.
     - if [[ $(curl -f -s http://${TEST_HOST}:${TEST_PORT}/metrics |wc -l) != 0 ]];
@@ -38,6 +44,7 @@ up-test-env-job:
 
 run-test-job:
   <<: *test-core
+  <<: *manual-run-not-allowed
   before_script:
 #    - pwd && ls && echo "$CI_PROJECT_DIR--1" && echo "${PARENT_PROJECT_DIR}--2" && echo "$CI_PROJECT_DIR--3"
 #      && echo "$$PARENT_PROJECT_DIR--4" && echo "$$PROJ_DIR--5" && echo "$$CI_PROJECT_DIR--6"
@@ -67,6 +74,7 @@ run-test-job:
 
 run-robot-test-job:
   <<: *test-core
+  <<: *manual-run-not-allowed
   before_script:
     - python3 -m venv "$CI_PROJECT_DIR/plugins/venv"
     - source "$CI_PROJECT_DIR/plugins/venv/bin/activate"