silent serverless post install message log clutter

Author: softprops

tests/test.sh

@@ -20,7 +20,7 @@ for project in  test-func test-func-dev; do
 
     # install build deps
     assert_success "it installs with npm" \
-        npm i -D "$DIST" --silent
+        SILENT=1 npm i -D "$DIST" --silent
 
     # integration test `package` command
     assert_success "it packages with serverless" \