Add goleak to all tests (#227)

* Run goleak as part of all tests
We are already using goleak in various tests.
This commit adds a TestMain to all remaining tests
and calls goleak.VerifyTestMain in them.
* Add goleak to debugd/deploy package and fix bug.
* Run go mod tidy
* Fix integration tests
* Move goleak invocation for mount integration test
* Ignore leak in state integration tests

Co-authored-by: Fabian Kammel <fk@edgelss.systems>

cli/internal/proto/client_test.go

@@ -12,12 +12,20 @@ import (
 	"github.com/edgelesssys/constellation/coordinator/state"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"go.uber.org/goleak"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/test/bufconn"
 )
 
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m,
+		// https://github.com/census-instrumentation/opencensus-go/issues/1262
+		goleak.IgnoreTopFunction("go.opencensus.io/stats/view.(*worker).start"),
+	)
+}
+
 func TestClose(t *testing.T) {
 	assert := assert.New(t)
 	require := require.New(t)