Investigate TestMasterTrait flakiness

[lburgazzoli]

What happened?

The TestMasterTrait sometimes fails with no clear explanation

Steps to reproduce

Seen last time in https://github.com/apache/camel-k/actions/runs/9013201397/job/24763635761?pr=5479

Relevant log output

❌ TestMasterTrait/only_one_integration_with_master_runs (5m51.74s)
  2024-05-09T06:59:28Z	DEBUG	camel-k	Finding available platforms in namespace test-82b481f7-cf2c-4c28-870e-882ed9ac152f
  2024-05-09T06:59:28Z	DEBUG	camel-k	Found active integration platform camel-k-traits-master
  Integration "firstqybdo" created
  2024-05-09T07:00:20Z	DEBUG	camel-k	Finding available platforms in namespace test-82b481f7-cf2c-4c28-870e-882ed9ac152f
  2024-05-09T07:00:20Z	DEBUG	camel-k	Found active integration platform camel-k-traits-master
  Integration "secondymkva" created
  2024-05-09T07:00:21Z	ERROR	camel-k	Error while reading container logs	{"error": "container \"integration\" in pod \"secondymkva-6c5f6cd5bd-66ljj\" is waiting to start: ContainerCreating"}
  github.com/apache/camel-k/v2/pkg/util/log.Logger.Error
  	/home/runner/work/camel-k/camel-k/pkg/util/log/log.go:81
  github.com/apache/camel-k/v2/pkg/util/log.Error
  	/home/runner/work/camel-k/camel-k/pkg/util/log/log.go:258
  github.com/apache/camel-k/v2/e2e/support.Logs.func1
  	/home/runner/work/camel-k/camel-k/e2e/support/test_support.go:539
  github.com/apache/camel-k/v2/e2e/common/traits.TestMasterTrait.func1.2.IntegrationLogs.func3
  	/home/runner/work/camel-k/camel-k/e2e/support/test_support.go:520
  reflect.Value.call
  	/opt/hostedtoolcache/go/1.21.10/x64/src/reflect/value.go:596
  reflect.Value.Call
  	/opt/hostedtoolcache/go/1.21.10/x64/src/reflect/value.go:380
  github.com/onsi/gomega/internal.(*AsyncAssertion).buildActualPoller.func3
  	/home/runner/go/pkg/mod/github.com/onsi/gomega@v1.33.1/internal/async_assertion.go:325
  github.com/onsi/gomega/internal.(*AsyncAssertion).match
  	/home/runner/go/pkg/mod/github.com/onsi/gomega@v1.33.1/internal/async_assertion.go:540
  github.com/onsi/gomega/internal.(*AsyncAssertion).Should
  	/home/runner/go/pkg/mod/github.com/onsi/gomega@v1.33.1/internal/async_assertion.go:145
  github.com/apache/camel-k/v2/e2e/common/traits.TestMasterTrait.func1.2
  	/home/runner/work/camel-k/camel-k/e2e/common/traits/master_test.go:70
  testing.tRunner
  	/opt/hostedtoolcache/go/1.21.10/x64/src/testing/testing.go:1595
  2024-05-09T07:01:15Z	DEBUG	camel-k	Finding available platforms in namespace test-0433bfcb-044c-4038-a556-8341333fdff2
  2024-05-09T07:01:15Z	DEBUG	camel-k	Found active integration platform camel-k-traits-kamelet
  1 integration(s) deleted
      testing.go:1490: test executed panic(nil) or runtime.Goexit: subtest may have called FailNow on a parent test

### Camel K version

main