tests/input-types: split out scminputs into individual tests

This makes the test faster (by removing it and replacing it with a
`TestScmInput` module that exports the `testScmInput` subroutine). Now,
all the input tests can be run in parallel.

Some of the `tests/jobs/*-update.sh` scripts were "broken" (e.g. tests
failed for various reasons on my machine), so I fixed those up as well.

Co-authored-by: gustavderdrache <gustavderdrache@gmail.com>

tests/input-types/deepgit.t

@@ -0,0 +1,29 @@
+use strict;
+use Cwd;
+use Setup;
+use TestScmInput;
+
+(my $datadir, my $pgsql) = test_init();
+
+require Hydra::Schema;
+require Hydra::Model::DB;
+
+use Test2::V0;
+
+my $db = Hydra::Model::DB->new;
+hydra_setup($db);
+
+# Tests the creation of a Hydra jobset using a deep git clone as input.
+testScmInput(
+  type => 'git',
+  name => 'deepgit',
+  expr => 'deepgit-input.nix',
+  uri => 'git-repo master 1',
+  update => 'jobs/git-update.sh',
+
+  # directories
+  datadir => $datadir,
+  testdir => getcwd,
+);
+
+done_testing;