Currently in R6, only the administrativeState can be updated on a subscription. This story will enable updating any property of a subscription. 

 As a PM Designer, I would like to update the subscription through monitoring policy so that I can modify the telemetry data my network function is reporting.

this includes operational policy and blueprint updates

keep in mind support for multiple sub per instance

AC-1

GIVEN: A previously created subscription with the `administrativeState` set to `unlocked`

WHEN:  A pm designer adds a new `measurementType` to the `measurementTypes` list contained within the `measurementGroups` of the `subscription` object

THEN: The PMSH should send an event to Message Router with the subscription and a `changeType` of `update`

AC-2

GIVEN: A previously created subscription with the `administrativeState` set to `unlocked`

WHEN:  A pm designer removes an existing `measurementType` from the `measurementTypes` list contained within the `measurementGroups` of the `subscription` object

THEN: The PMSH should send an event to Message Router with the subscription and a `changeType` of `update`

AC-3

GIVEN: A previously created subscription with the `administrativeState` set to `unlocked`

WHEN:  add nf

THEN: The PMSH should send an event to Message Router with the subscription and a `changeType` of `create`

AC-4

GIVEN: A previously created subscription with the `administrativeState` set to `unlocked`

WHEN: remove nf

THEN: The PMSH should send an event to Message Router with the subscription and a `changeType` of `delete`

AC-5

scenario where nf filter and sub are updated in one update