The start parameter of the history API is broken

[marco-c]

https://api.coverage.moz.tools/v2/history works, https://api.coverage.moz.tools/v2/history?start=1615931335 doesn't.

[marco-c]

The history API is defined at

code-coverage/backend/code_coverage_backend/api.yml

Line 61 in de63565

/v2/history:

, and implemented at

code-coverage/backend/code_coverage_backend/api.py

Line 86 in de63565

def coverage_history(

.

[shubham-y]

The end parameter of the history API is also broken