Merged PR 13: Fix azure-pipeline node kill

We use killall to stop node from running but az pipe catch SIGTERM.
Let's rather use SIGINT

.drone.yml

@@ -9,6 +9,7 @@ steps:
   - node ./test-server/node-http.js &
   - npm install
   - npm run test:nowatch
+  - kill -2 %1 2>/dev/null 
 
 ---
 kind: pipeline
@@ -20,4 +21,5 @@ steps:
   commands:
   - node ./test-server/node-http.js &
   - npm install
-  - npm run test:nowatch
+  - npm run test:nowatch
+  - kill -2 %1 2>/dev/null