Fixed golangci-lint issues: /fission/pkg/executor (#1842)

pkg/executor/util/merge.go

@@ -54,6 +54,7 @@ func MergeContainer(dst *apiv1.Container, src *apiv1.Container) (*apiv1.Containe
 	return &dstC, errs.ErrorOrNil()
 }
 
+// MergePodSpec updates srcPodSpec with targetPodSpec fields if not empty
 func MergePodSpec(srcPodSpec *apiv1.PodSpec, targetPodSpec *apiv1.PodSpec) (*apiv1.PodSpec, error) {
 	if targetPodSpec == nil {
 		return srcPodSpec, nil

pkg/executor/util/util.go

@@ -37,6 +37,7 @@ func ApplyImagePullSecret(secret string, podspec apiv1.PodSpec) *apiv1.PodSpec {
 	return &podspec
 }
 
+// WaitTimeout starts a wait group with timeout
 func WaitTimeout(wg *sync.WaitGroup, timeout time.Duration) {
 	waitCh := make(chan struct{})
 	go func() {