Update .gitlab-ci.yml

.gitlab-ci.yml

+stages:
+    - build
+    - test
+    - deploy
 
+job1:
+    stage: build
+    script:
+        - echo "Hello I am job 1"
+
+job2:
+    stage: build
+    script:
+        - echo "Hello I am job 2"
+
+job3:
+    stage: test
+    script:
+        - echo "Hello I am job 3"
+
+job4:
+    stage: deploy
+    script:
+        - echo "Hello I am job 4"