Update dnsforwardzone README file and add tests for executing plugin with
`ipaapi_context` set to `client`.
A new test playbook can be found at:
tests/dnsforwardzone/test_dnsforwardzone_client_context.yml
The new test file can be executed in a FreeIPA client host that is
not a server. In this case, it should be defined in the `ipaclients`
group, in the inventory file.
Due to differences in data returned when running ipadnsforwardzone in
a client context, some values had to be modified so that comparision
works, avoiding unnecessary IPA API calls.
This patch allows the modification of the forward zone policy in
an existing DNS Forward Zone, and fixes some issues with `enable`
and `disable` state that prevented correct behavior of `forwardpolicy`.
This patch modify the was forwarders are configured, using two attributes,
`ip_address` and `port`, instead of IPA API internal string representation
of `IP port PORT`.
