add defaultSize parameter for DiskStorageSelector and set it to 8 for lxc

we had it previously on 8GB for containers, but with the refactoring,
this got lost. this patch changes this back

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Reviewed-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/manager6/form/DiskStorageSelector.js

@@ -28,6 +28,10 @@ Ext.define('PVE.form.DiskStorageSelector', {
     // hides the size field (e.g, for the efi disk dialog)
     hideSize: false,
 
+    // sets the intial size value
+    // string because else we get a type confusion
+    defaultSize: '32',
+
     changeStorage: function(f, value) {
 	var me = this;
 	var formatsel = me.getComponent('diskformat');
@@ -115,7 +119,7 @@ Ext.define('PVE.form.DiskStorageSelector', {
 		minValue: 0.001,
 		maxValue: 128*1024,
 		decimalPrecision: 3,
-		value: '32',
+		value: me.defaultSize,
 		allowBlank: false
 	    },
 	    {

www/manager6/lxc/MPEdit.js

@@ -175,6 +175,7 @@ Ext.define('PVE.lxc.MountPointInputPanel', {
 	    nodename: me.nodename,
 	    storageContent: 'rootdir',
 	    autoSelect: true,
+	    defaultSize: 8,
 	    hidden: me.unused || !me.isCreate
 	});