Always set status.FmlCustomResolution

Always set status.FmlCustomResolution to Unset in case there is no
cloud-config at all, we don't throw an error later in kvm.

Signed-off-by: Shahriyar Jalayeri <shahriyar@zededa.com>

pkg/pillar/cmd/domainmgr/domainmgr.go

@@ -2019,7 +2019,6 @@ func configToStatus(ctx *domainContext, config types.DomainConfig,
 				err)
 		}
 
-		// Set FML custom resolution if it is set in cloud-init config
 		if isCloudConfig(ciStr) {
 			setFmlCustomResolution(ciStr, status)
 		}
@@ -2061,7 +2060,6 @@ func setFmlCustomResolution(config string, status *types.DomainStatus) {
 		return
 	}
 
-	status.FmlCustomResolution = types.FmlResolutionUnset
 	if val, ok := cloudinit[string(types.FmlCustomResolution)]; ok {
 		if fmlCustomResolution, valid := val.(string); valid {
 			status.FmlCustomResolution = fmlCustomResolution

pkg/pillar/types/global.go

@@ -305,7 +305,7 @@ const (
 
 var (
 	// FmlResolutionUnset is a string to indicate that custom resolution is not set
-	FmlResolutionUnset = "unset"
+	FmlResolutionUnset = ""
 	// FmlResolution800x600 is a string to indicate 800x600 resolution
 	FmlResolution800x600 = "800x600"
 	// FmlResolution1024x768 is a string to indicate 1024x768 resolution