ssl backend for thermo / applied biosystems ATC automated thermal cycler

[ben-ray]

My 384 ATC never was able to connect by IP alone in the .exe software, but could connect by SSL. This adds SSL connection as an option to PLR by inputting a hostname into thermal cycler setup, like so:

backend = ATCBackend(
    ip=my_instrument_ip,
    port=7443, # yours might be different
    hostname="my_instrument_serial_number",
)

atc = Thermocycler(
    name="atc384",
    backend=backend,
    size_x=0, size_y=0, size_z=0,
    child_location=Coordinate(0,0,0)
)

await atc.setup()

[ben-ray]

At least when using SSL, this command will timeout if I use read_once = False, but with read_once = True, the command completes when the instrument is physically finished with the movement

[rickwierenga]

I think this is fixed in #761, but read_once should be fine here. what do you think @xbtu2 ?

[ben-ray]

it takes more than 20 seconds to open lid (~22 for me), hence increasing timeout to 25

[xbtu2]

my pr for the same function was submitted minutes ago lol

[ben-ray]

the instrument uses a different shared secret for ssl compared to non-ssl, so I remove the shared-secret option from the backend so the connection always uses the correct shared secret for ssl vs non-ssl