[Bug] Broken Tests on main after #235

[Olshansk]

Objective

Fix broken bugs on main introduced by #235.

Origin Document

#235 was a large PR that reintroduced a bug fixed by #282.

Specifically, in runtime/test_artifacts/uti.go, the addition of os.Exit(0)

func CleanupPostgresDocker(_ *testing.M, pool *dockertest.Pool, resource *dockertest.Resource) {
	// You can't defer this because `os.Exit`` doesn't care for defer
	if err := pool.Purge(resource); err != nil {
		log.Fatalf("could not purge resource: %s", err)
	}
	os.Exit(0)
}

Ignores the exitCode in persistence/test/setup_test.go

func TestMain(m *testing.M) {
	pool, resource, dbUrl := test_artifacts.SetupPostgresDocker()
	testPersistenceMod = newTestPersistenceModule(dbUrl)
	exitCode := m.Run()
	test_artifacts.CleanupPostgresDocker(m, pool, resource)
	os.Exit(exitCode)
}

Resulting in various errors committed to main:

Doing a hard reset to the prior commit (git reset --hard 2c390c3c055b4d1a36fb93075867bcf96b89fdcd) validated that these tests were functional in the previous commit.

Goals

• make develop_test should pass after removing os.Exit(0) from runtime/test_artifacts/util.go

Deliverable

• Removal of os.Exit(0) in runtime/test_artifacts/util.go
• Fixes in all broken tests raised by make test_all

Non-goals / Non-deliverables

• New functionality
• Refactoring / organizing existing code

Testing Methodology

• All tests: make develop_test
• LocalNet: verify a LocalNet is still functioning correctly by following the instructions at docs/development/README.md

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Creator: @Olshansk
Co-Owners: @deblasis