Squad

This 1.54 release bring a handful of bugfixes and improvements:

* Bug fixes
* handle LAVA HTTP/500 responses from the api
* fix several bug in the metric page and improve overall performance
* fix a race-condition bug when processing multiple result submissions

* New features
* allow filtering builds by id and testjobs by backends

Complete list of changes going in:

* api: rest: add allow filtering testjobs by backend
* api: rest: allow filtering builds by id
* ci: lava: catch submission errors on 500 errors
* ci: tuxsuite: handle failed jobs
* core: BuildSummary: add uniqueness constraint
* core: queries: improve overall query performance
* core: queries: remove extra order_by
* frontend: chart.js: avoid drawing charts on empty environments
* frontend: queries: improve query performance
* frontend: templatetags: avoid having 'None' rendered
* frontend: views: avoid None in threshold metric data

This 1.53.2 release fixes a bug in the TuxSuite backend
when fetching tests with failed builds. The release also
fixes the number of tests used when calculating the confidence
score for a given test.

This 1.53.1 release includes a missing "metadata" field
in tests api REST endpoint.

This 1.53 release drops Django 2.2 support in SQUAD and
add support to 3.2 and 4.0.

This 1.52 release includes a new feature in the linux-log-parser plugin
that split the linux log in the boot part. The plugin now will
generate tests in two suites "log-parser-boot" and "log-parser-test"
which will represent the fault occurencies in both stages.

This 1.51 release introduces support for TuxSuite backends, allowing
users to pull test and build results from tuxsuite.com.

It also adds a new API endpoint for querying failures with confidence