mgr/dashboard: run cephadm-backend e2e tests with KCLI

mgr/dashboard: run cephadm-backend e2e tests with KCLI

Fixes: https://tracker.ceph.com/issues/51300
Signed-off-by: Alfonso Martínez <almartin@redhat.com>
(cherry picked from commit 5c03b49c4da55cf8d0c679ecb2c58182e4d3361a)

Conflicts:
    - Added content in HACKING.rst as dash-devel.rst does not exist in octopus:
    doc/dev/developer_guide/dash-devel.rst
    src/pybind/mgr/dashboard/HACKING.rst
    - Adapted code to octopus branch in the following files due to branch divergence:
    src/pybind/mgr/dashboard/frontend/cypress.json
    src/pybind/mgr/dashboard/frontend/cypress/integration/cluster/configuration.e2e-spec.ts
    src/pybind/mgr/dashboard/frontend/cypress/integration/cluster/hosts.po.ts
    src/pybind/mgr/dashboard/frontend/cypress/integration/cluster/osds.e2e-spec.ts
    src/pybind/mgr/dashboard/frontend/cypress/integration/orchestrator/workflow/01-hosts.e2e-spec.ts
    src/pybind/mgr/dashboard/frontend/cypress/integration/page-helper.po.ts
    src/pybind/mgr/dashboard/frontend/cypress/integration/ui/dashboard.e2e-spec.ts