Use specific parts of DNS records rather than the string form of the record.
Use specific parts of DNS records rather than the string form of the record.

Net::DNS::RR::TXT#to_s doesn't actually include the content of the TXT record.
This caused false positives for the DNS slave feature which only showed up
during use.  False positives in tests are, of course, bad and should be fixed.

caess/sysadmin-cucumber-demo,caess/sysadmin-cucumber-demo