mgr/dashboard: configure rbd mirroring

mgr/dashboard: configure rbd mirroring

Resolves: rhbz#1891012

One-click button in the case of an orch cluster for configuring the
rbd-mirroring when its not properly setup. This button will create an
rbd-mirror service and also an rbd labelled pool(replicated: size-3) (if they are not
existing)

Fixes: https://tracker.ceph.com/issues/55646
Signed-off-by: Nizamudeen A <nia@redhat.com>
 Conflicts:
	src/pybind/mgr/dashboard/frontend/src/app/core/error/error.component.html
	src/pybind/mgr/dashboard/frontend/src/app/shared/services/module-status-guard.service.ts

This commits had minor conflicts where the addition of dashboardButton
had to be explicitly added and the state of api/orch/status in
module-status-guard had to be updated.

(cherry picked from commit e918150212074a757c95f05ecb9d528ff1fe6e06)