Fix bug #4267: Add --log option to specify log folder for UI2.0
Fix bug #4267: Add --log option to specify log folder for UI2.0

zstackorg/zstack-utility,zstackio/zstack-utility,zstackorg/zstack-utility,live4thee/zstack-utility,zstackorg/zstack-utility,live4thee/zstack-utility,zstackio/zstack-utility,zstackio/zstack-utility,live4thee/zstack-utility