modifies error message in adding security rule

Because the information on the type of input data
is outputted in "validate_ip_protocol" method,
I removed the information on the type and
modified error message.

At the same time, I make error messages translatables
in this file.

Closes-Bug: #1224210
Change-Id: I697d38ce7da8ff403a391747264eb59db30dd545
Merge "modifies error message in adding security rule"