Merge pull request #67101 from afreen23/nvme-ns-api

mgr/dashboard: fetch all namespaces in a gateway group

Reviewed-by: Nizamudeen A <nia@redhat.com>
Reviewed-by: pujaoshahu <pshahu@redhat.com>

diff --cc src/pybind/mgr/dashboard/frontend/src/app/shared/api/nvmeof.service.spec.ts
Simple merge

diff --cc src/pybind/mgr/dashboard/frontend/src/app/shared/api/nvmeof.service.ts
Simple merge

diff --cc src/pybind/mgr/dashboard/openapi.yaml
Simple merge