chore: set e2e tests to run in parallel

Makefile

@@ -244,7 +244,7 @@ endif
 .PHONY: run-tests test test-all $(TEST_TARGETS)
 
 test-e2e: build-docker
-	go test -mod=readonly -timeout=25m -v $(PACKAGES_E2E) -count=1 --tags=e2e
+	go test -mod=readonly -timeout=25m -v $(PACKAGES_E2E) -parallel -count=1 --tags=e2e
 
 test-sim-nondeterminism:
 	@echo "Running non-determinism test..."

test/e2e/e2e_test.go

@@ -9,29 +9,41 @@ import (
 	"github.com/stretchr/testify/suite"
 )
 
+// Each test suite can be run parallel, so it should not exist dependency
+// between test different suite. However, inisde the suite itself, it can
+// have dependency between Test1 and Test2, example:
+// BTCStakingTestSuite has Test2SubmitCovenantSignature which
+// depends on Test1CreateFinalityProviderAndDelegation for creating the
+// finality provider used to query fp delegations and do its check.
+
 // IBCTransferTestSuite tests IBC transfer end-to-end
 func TestIBCTranferTestSuite(t *testing.T) {
+	t.Parallel()
 	suite.Run(t, new(IBCTransferTestSuite))
 }
 
 // TestBTCTimestampingTestSuite tests BTC timestamping protocol end-to-end
 func TestBTCTimestampingTestSuite(t *testing.T) {
+	t.Parallel()
 	suite.Run(t, new(BTCTimestampingTestSuite))
 }
 
 // TestBTCTimestampingPhase2HermesTestSuite tests BTC timestamping phase 2 protocol end-to-end,
 // with the Hermes relayer
 func TestBTCTimestampingPhase2HermesTestSuite(t *testing.T) {
+	t.Parallel()
 	suite.Run(t, new(BTCTimestampingPhase2HermesTestSuite))
 }
 
 // TestBTCTimestampingPhase2RlyTestSuite tests BTC timestamping phase 2 protocol end-to-end,
 // with the Go relayer
 func TestBTCTimestampingPhase2RlyTestSuite(t *testing.T) {
+	t.Parallel()
 	suite.Run(t, new(BTCTimestampingPhase2RlyTestSuite))
 }
 
 // TestBTCStakingTestSuite tests BTC staking protocol end-to-end
 func TestBTCStakingTestSuite(t *testing.T) {
+	t.Parallel()
 	suite.Run(t, new(BTCStakingTestSuite))
 }