Low: libpe_status, tools: Show guest node host only with --show-detail
In crm_mon, currently the GuestOnline line shows
"<guest node>@<container's node>". Here, we make it show "<guest node>"
when --show-detail is not set, and "<guest node>@<container's node>"
when --show-detail is set.
Closes T180
Closes CLBZ#5373
Signed-off-by: Reid Wahl <nrwahl@protonmail.com>