Merge branch 'dependabot/npm_and_yarn/development/7.4/mocha-8.0.1' into tmp/octopus/w/7.9/dependabot/npm_and_yarn/development/7.4/mocha-8.0.1

Destroy the HTTP agent after rest unit tests, since mocha 4+ do not
force exit anymore, it would hang otherwise due to connections not
closed.

Ref: https://boneskull.com/mocha-v4-nears-release/#mochawontforceexit

lib/network/rest/RESTClient.js

@@ -88,6 +88,16 @@ class RESTClient {
         });
     }
 
+    /**
+     * Destroy the HTTP agent, forcing a close of the remaining open
+     * connections
+     *
+     * @return {undefined}
+     */
+    destroy() {
+        this.httpAgent.destroy();
+    }
+
     /*
      * Create a dedicated logger for RESTClient, from the provided werelogs API
      * instance.

package.json

@@ -46,7 +46,7 @@
     "eslint-config-airbnb": "6.2.0",
     "eslint-config-scality": "scality/Guidelines#ec33dfb",
     "eslint-plugin-react": "^4.3.0",
-    "mocha": "2.5.3",
+    "mocha": "8.0.1",
     "sinon": "^9.0.2",
     "temp": "0.9.1"
   },

tests/unit/network/rest/index.js

@@ -59,6 +59,7 @@ describe('REST interface for blob data storage', () => {
 
     after(done => {
         server.stop();
+        client.destroy();
         done();
     });