Fix 404 errors when running tests with NODE_ENV=test

production_safety_test.js requires tests to run with NODE_ENV set to
`test`. The /test endpoint was previously only enabled with NODE_ENV set
to `development` which results in the api3 security tests failing with 404
errors. Instead, enable it for NODE_ENV set to `test`.

Author: bniels707

lib/api3/index.js

@@ -77,7 +77,7 @@ function configure (env, ctx) {
 
     app.get('/version', require('./specific/version')(app, ctx, env));
 
-    if (app.get('env') === 'development' || app.get('ci')) { // for development and testing purposes only
+    if (app.get('env') === 'test' || app.get('ci')) { // for development and testing purposes only
       app.get('/test', async function test (req, res) {
 
         try {