version: Add GetDefaultPreset()

This will allow to override it at compile-time when needed.
I changed the default preset in the configuration code, but I did not
check if it was used in other places.

This will help with #3637

Author: cfergeau

pkg/crc/config/settings.go

@@ -70,7 +70,7 @@ func RegisterSettings(cfg *Config) {
 	}
 
 	// Preset setting should be on top because CPUs/Memory config depend on it.
-	cfg.AddSetting(Preset, string(preset.OpenShift), validatePreset, RequiresDeleteAndSetupMsg,
+	cfg.AddSetting(Preset, version.GetDefaultPreset().String(), validatePreset, RequiresDeleteAndSetupMsg,
 		fmt.Sprintf("Virtual machine preset (valid values are: %s)", preset.AllPresets()))
 	// Start command settings in config
 	cfg.AddSetting(Bundle, defaultBundlePath(cfg), validateBundlePath, SuccessfullyApplied, BundleHelpMsg(cfg))

pkg/crc/version/version.go

@@ -35,6 +35,8 @@ var (
 	// will be true for releases on macos and windows
 	// will be false for git builds on macos and windows
 	installerBuild = "false"
+
+	defaultPreset = "openshift"
 )
 
 const (
@@ -140,3 +142,12 @@ func GetCRCLatestVersionFromMirror(transport http.RoundTripper) (*CrcReleaseInfo
 
 	return &releaseInfo, nil
 }
+
+func GetDefaultPreset() crcPreset.Preset {
+	preset, err := crcPreset.ParsePresetE(defaultPreset)
+	if err != nil {
+		// defaultPreset is set at compile-time, it should *never* be invalid
+		panic(fmt.Sprintf("Invalid compilet-time default preset '%s'", defaultPreset))
+	}
+	return preset
+}