fix(setUserToken): Add fallback to unimplemented strategies

Author: farnabaz

lib/core/auth.js

@@ -157,6 +157,11 @@ export default class Auth {
   }
 
   setUserToken (token) {
+    if (!this.strategy.setUserToken) {
+      this.setToken(this.strategy.name, token)
+      return Promise.resolve()
+    }
+
     return Promise.resolve(this.strategy.setUserToken(token)).catch(error => {
       this.callOnError(error, { method: 'setUserToken' })
       return Promise.reject(error)