L2SS-621: Install our dependencies in the image to speed up the device start, and to avoid redownloading the dependencies a lot when testing/debugging a device. Do recheck the dependencies when we start the containwr.

Resolve L2SS-616 "Cleanup cdb"

Closes L2SS-616

See merge request !238

L2SS-595: added all FPGA_bf_weights points

Closes L2SS-595

See merge request !233

L2SS-613 L2SS-614: Expose HBAT properties using attributes instead of commands...

Closes L2SS-613

See merge request !236

L2SS-610: L2SS-611: Prevent assigning self.proxy twice

Closes L2SS-610 and L2SS-611

See merge request !235

L2SS-583: Add bugbear to linting as to detect erroneous code

Closes L2SS-583

See merge request !222

L2SS-613: Cache positions and calculators. Might as well directly calculate what we need in the INIT phase

L2SS-613 L2SS-614: Expose HBAT properties using attributes instead of commands (more 'tangoic'), and avoid connecting to ltspi in the unit test

L2SS-615: Rename HBAT_bf_delays -> HBAT_bf_delay_steps to better describe its unit

Closes L2SS-615

See merge request !237

L2SS-615: Rename HBAT_bf_delays -> HBAT_bf_delay_steps to better describe its unit (they're steps, not seconds)

L2SS-555: Merge common initialisation code and add required properties to abstract base class already.

L2SS-555: Split off common archiver/retriever functions, have retreiver use same get_db_config function

L2SS-561: Add 100mb log limit to all containers not using syslog

Closes L2SS-561

See merge request !224

Fixes syntax error. Don't spurious warn if removing an attribute that isn't archived. Make is_attribute_archived more exact.

Allow attributes to be read/written also if device is alarming. We want to be able to know its status then, after all.