Java11client connect timeout

[gb-klein]

Java11 client (feign.http2client.Http2Client) should consider Options::connectTimeoutMillis

Problem: Http2Client does not consider connectTimeoutMillis from Options (and followRedirects as well).
Solution:

• on request execution check if the provided Options differ from the current client's timeout and redirect settings. If yes => create a new client from the existing one, but with timeout and redirect settings from Options.
• Additionally provide a constructor taking Options. This will decrease the probability of client configuration mismatches and thus increase performance

fixes #1306

[kdavisk6]

Thanks for the work on this one.