config submitter part 2

[DorKatzelnick]

• add consnter info to router config
• add router info to consenter config
• router's certificate pinning in SubmitConfig
• add configSubmitter to router, without forwarding config requests

issue: #192

[tock-ibm]

This trick will not work well with IPv6.

To construct a string from an IP address and port in Go, the net.JoinHostPort function is the recommended approach. This function correctly handles various IP address formats, including IPv6, and ensures the proper formatting of the "host:port" string.

[tock-ibm]

Here, because it is a config or security problem, log the details of the offending incoming cert, in human readable format as well as raw. This may help correct the issue.

[tock-ibm]

This is unrelated to the current PR, but an early return approach in the if is more readable and preferrable in Go. That is,

if err := s.verifier.Verify(tr.request); err != nil {
				s.logger.Debugf("request is invalid: %s", err)
				// send error to the client
				s.responseToClientWithError(tr, fmt.Errorf("request verification error: %s", err))
                continue
}

... code for no err==nil

[DorKatzelnick]

next PR will address this code