Make pip install verbose (#9496)

Co-authored-by: Mehrdad <noreply@github.com>

ci/travis/ci.sh

@@ -238,7 +238,7 @@ install_ray() {
   (
     cd "${WORKSPACE_DIR}"/python
     build_dashboard_front_end
-    pip install -v -e .
+    pip install -v -v -e .
   )
 }