Make PM_CONTEXT_LOCAL work like PM_CONTEXT_HOST for metrics that are
visible, and in particular ensure that dynamic metrics and derived
metrics are visible for the PMNS services when using PM_CONTEXT_LOCAL.
This should be enough to make pminfo -L mmv work again after mmv was
converted to using dynamic names in the PMNS.
Rework for PM_CONTEXT_LOCAL PMNS services
Make PM_CONTEXT_LOCAL work like PM_CONTEXT_HOST for metrics that are
visible, and in particular ensure that dynamic metrics and derived
metrics are visible for the PMNS services when using PM_CONTEXT_LOCAL.
This should be enough to make pminfo -L mmv work again after mmv was
converted to using dynamic names in the PMNS.