optionally use users-keycloak endpoint for password reset

When the `users-keycloak` interface is available, use it in place of the
legacy endpoint.

Refs UIU-3031

src/components/CreateResetPassword/CreateResetPasswordControl.js

@@ -107,7 +107,8 @@ class CreateResetPasswordControl extends Component {
       },
     } = stripes;
 
-    const path = `${url}/bl-users/password-reset/${isValidToken ? 'reset' : 'validate'}`;
+    const interfacePath = stripes.hasInterface('users-keycloak') ? 'users-keycloak' : 'bl-users';
+    const path = `${url}/${interfacePath}/password-reset/${isValidToken ? 'reset' : 'validate'}`;
 
     fetch(path, {
       method: 'POST',