What would you like to be added:

Include bookinfo as test application in the e2e test set to cover complex application scenarios with multiple language applications and multiple hops. In this way, problem similar to #756 could be convered.

Why is this needed:

The test application in the e2e framework is just a multi-instance deployment of a single go application, which acts as both a client and a server, and has only a single-hop access. When doing manual testing, we often use bookinfo, but it often happens that all e2e test cases pass and the bookinfo test fails.