CA-68581: Update docs for task.progress to better reflect its meaning.
CA-68581: Update docs for task.progress to better reflect its meaning.

We don't want API consumers relying on the task.progress field to
determine whether a task is complete, since it's not always accurate.
This change points API users at the task.status field instead.

Signed-off-by: John Else <37b74501daa612e48fea94f9846ed4ddeb6a8f07@citrix.com>

djs55/xcp-networkd,koushikcgit/xcp-rrdd,djs55/xcp-networkd,johnelse/xcp-rrdd,simonjbeaumont/xcp-rrdd,koushikcgit/xcp-networkd,koushikcgit/xcp-rrdd,djs55/squeezed,johnelse/xcp-rrdd,sharady/xcp-networkd,koushikcgit/xcp-networkd,sharady/xcp-networkd,robhoes/squeezed,koushikcgit/xcp-rrdd,djs55/xcp-rrdd,djs55/xcp-rrdd,simonjbeaumont/xcp-rrdd