Merge pull request #1100 from DeterminateSystems/nest-tests

Dependencies

• [2] EBN3NCSU Tests: restructure to more closely mirror the sources
• [3] LN3E2P4E t: Test Projects JSON serialization and deserialization
• [4] L3B3ZS37 JobsetEval/cancel: test & fix
• [5] HWGFAF2B queue runner: test notifications
• [6] ASPD4MDN Passwords: check in constant time
• [7] LYRHVDS2 TT: add helpers for linking to jobs, jobsets, and projects, and for generating colon separated names.
• [8] EKHD4I44 Event: init structure and parse existing messages
• [9] OPSWSU4L hydra-notify: move BuildStarted processing to an Event
• [10] M5WS7Z65 t/Helper/CatalystUtils.t: test trim functionality
• [11] SWXGVPJN hydra-notify: extract runPluginsForEvent to a TaskDispatcher
• [12] L32HJNV5 Hydra::Math: add an exponential_backoff function
• [13] VHC5UKOB rename api-test.pl to .t so it runs under yath
• [14] 6BPELYYT Create a helper for dealing with nested attribute sets
• [15] DNOLOMX7 hydra-send-stats: add a failing test asserting it can run
• [16] GD5IRH26 move the api-test.nix in to the jobsdir
• [17] 3R3AYTCQ t/BuildDiff: init
• [18] NNKWJGML t/JobsetEval: test GETing the eval page
• [19] S2KNQCPB NixExprs: extract the `escape` function and test it
• [20] OKOQ3LNQ Admin/clear-queue-non-current: test behavior
• [21] LQDK2TS5 Test that each page listing evals works
• [22] 4Y3LBQYI Use system-features from the Nix conf in the default machine file
• [23] P4SME2BC Abstract over postgres' LISTEN/NOTIFY
• [24] QTZ6UUOM Hydra::Helper::Nix::getMachines: add a test
• [25] 2JJP7673 tests: move to t, allow `yath test` from root
• [26] QOV7KWRH Expose Prometheus metrics at /metrics
• [27] MQLCUSZL Test the fake derivations channel, asserting nested packages are properly represented.
• [28] TVXPKQL4 Move the default-machine-file test under `queue-runner`
• [29] 5DXGOH6Q statsd: add a chance to set hostname and port in hydra.conf
• [30] BJIR6VCG Start checking PRs with perlcritic
• [31] ZZ4HEML6 JobsetEval/restart-*: Write tests for the behavior

Change contents

• file un-deletion: Controller (d--r------)Controller (d--r------)
  [3.473]→[3.451:451](∅→∅),[3.697]→[3.452:473](∅→∅),[3.697]→[3.452:473](∅→∅)
• file un-deletion: JobsetEval (d--r------)JobsetEval (d--r------)
  [3.23]→[3.1:1](∅→∅),[3.451]→[3.2:23](∅→∅),[3.451]→[3.2:23](∅→∅)
• file un-deletion: Helper (d--r------)Helper (d--r------)
  [3.999]→[3.981:981](∅→∅),[3.697]→[3.982:999](∅→∅),[3.697]→[3.982:999](∅→∅)