fix the issue that xds routing fails when okhttp2.2.0 is used

[daizhenyu]

What type of PR is this?

Bug.

What this PR does / why we need it?

fix the issue that xds routing fails when okhttp2.2.0 is used. The cause is that the okhttp2 earlier version uses java.net.URL instead of com.squareup.okhttp.HttpUrl.

Which issue(s) this PR fixes？

Fixes #1647

Does this PR introduce a user-facing change?

No

Checklist

• [x] Make sure there is a GitHub_issue related with this PR before you start working on it.
• [x] Make sure you have squashed your change to one single commit.
• [ ] GitHub Actions works fine in this PR.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 57.14286% with 3 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...eptor/OkHttpClientInterceptorChainInterceptor.java	57.14%	3 Missing :warning:

Flag	Coverage Δ	Complexity Δ
unittests	44.20% <57.14%> (-0.01%)	181.00 <0.00> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ	Complexity Δ
...eptor/OkHttpClientInterceptorChainInterceptor.java	72.09% <57.14%> (-3.59%)	0.00 <0.00> (ø)

... and 1 file with indirect coverage changes