"v7" CLI firmware has no "terminal length 0" equivalent (see
_send_paged_command's docstring), so a config long enough to paginate
emits "--More--" prompts that _send_command's expect_string=base_prompt
match never sees. On real hardware (GS110TPv3, 7 VLANs, 10 interfaces)
this hung every scheduled config-backup poll for 30s and failed with
"Pattern not detected: '<prompt>[>#]' in output.", so the config was
never actually backed up. get_mac_address_table()/get_vlans() already
use _send_paged_command() for the same reason on other long outputs;
get_config() now does too.
Also fixed tests/unit/test_driver.py's import/patch target
(napalm_netgear_plus -> napalm_netgear, the actual package name) —
the whole file has been uncollectable since its initial commit, no CI
was wired up here to catch it. And removed a dead unreachable
`return {"success": ..., "output": ...}` line after get_health_metrics's
real return (undefined names, ruff F821), unrelated leftover found
while fixing the above.
Christian Manivong