Add dns_rdata_totext() and dns_rdata_fromtext() to fromwire for valid inputs to ensure that what we accept in dns_rdata_fromwire() can be written out and read back in.
Add dns_rdata_totext() and dns_rdata_fromtext() to fromwire for valid inputs to ensure that what we accept in dns_rdata_fromwire() can be written out and read back in.