The rom_impl variant of the https_request example test connects to an
external server, which requires a valid system time for TLS certificate
validation. In CI, SNTP time sync can be unreachable, causing transient
failures. Write the host timestamp into the DUT's NVS partition (via the
existing write_time_to_nvs helper) before running the test, so the
firmware can set its clock without depending on external NTP servers.
Replace erase_nvs + SNTP time sync with direct NVS timestamp injection
from the pytest host. This eliminates CI flakiness caused by NTP servers
being unreachable from the CI lab network.
Changes:
- Add write_time_to_nvs() helper that generates an NVS partition image
with the current host timestamp and flashes it to the DUT before each
test. The firmware reads this via the existing update_time_from_nvs()
path and skips SNTP entirely.
- Remove @pytest.mark.parametrize('erase_nvs', ['y']) from all 4
Ethernet-based tests since NVS is now written with valid data.
This commit refactors the script responsible for starting a Python-based HTTPS server
to align with the latest Python version's requirements and best practices.
Closes https://github.com/espressif/esp-idf/issues/13575
