Configurable pull policy when `velero install`

[kaovilai]

Describe the problem/challenge you have

I would like pull policy to be configurable with velero install

velero/pkg/install/deployment.go

Lines 232 to 236 in 6588141

	pullPolicy := corev1.PullAlways
	imageParts := strings.Split(c.image, ":")
	if len(imageParts) == 2 && imageParts[1] != "latest" {
	pullPolicy = corev1.PullIfNotPresent
	}

Describe the solution you'd like

Anything else you would like to add:

Environment:

• Velero version (use velero version):
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):

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[kaovilai]

Scenario is I build and run a dev image reusing tag. The tag is not latest, so I need to use pullAlways for changes to affect.