Fix log issue and invalid IP format issue

Change the andebug(for hive.log) to add udr instead of switch udr status (Because this function is for adding new UDR)
Handle command for python return not empty, such as it return Invalid IPv4 format for hint.
Add popup message for hint of error message from API(Originally, it will always return 'succeed')
Modify typo of Cloud API return message "IP4 format is not correct." to "Invalid IPv4 format."