Coverage status badge broken after test result is uploaded

[gaogaotiantian]

Describe the bug

The coverage status badge is showing unknown now - the most possible relevant event is that we start uploading test results to codecov now.

Environment (please complete the following information):

• Browser [e.g. chrome, safari] (if applicable)
• System (e.g., local machine, CI, etc) (if applicable)

Chrome.

To Reproduce
https://github.com/apache/spark

Expected behavior
The coverage data should be shown (it exists on codecov.io)

Screenshots

Additional context

[linear]

CCMRG-1959