The DNS record plugin does not support modification of a record. One
can only add A type addresses to a DNS record or remove the current
ones. To actually change a DNS record value it has to be removed and
then added with a desired value.
This patch adds a new DNS plugin command "dnsrecord-mod" which enables
user to:
- modify a DNS record value (note than DNS record can hold multiple values
and those will be overwritten)
- remove a DNS record when an empty value is passed
New tests for this new command have been added to the CLI test suite.
https://fedorahosted.org/freeipa/ticket/1137