Minor fix in NS LCM interface definitions

          - ROLLED_BACK

          - FAILED

  NsLcmOperationStateType:

    description: >

      The enumeration NsLcmOperationStateType shall comply with the provisions defined in Table 6.5.4.4-1.

      Value | Description

      ------|------------

      PROCESSING | The LCM operation is currently in execution.

      COMPLETED | The LCM operation has been completed successfully.

      PARTIALLY_COMPLETED | The LCM operation has been partially completed with accepTable errors.

      FAILED_TEMP | The LCM operation has failed and execution has stopped, but the execution of the operation is not considered to be closed.

      FAILED | The LCM operation has failed and it cannot be retried or rolled back, as it is determined that such action won't succeed.

      OLLING_BACK | The LCM operation is currently being rolled back.

      ROLLED_BACK | The LCM operation has been successfully rolled back, i.e. The state of the VNF prior to the original operation invocation has been restored as closely as possible.

    type: string

    enum:

      - PROCESSING

      - COMPLETED

      - FAILED_TEMP

      - FAILED

      - ROLLING_BACK

      - ROLLED_BACK

  NsLcmOpType:

    description: >

      The enumeration NsLcmOpType represents those lifecycle operations that trigger a NS lifecycle management operation

            $ref: "../../definitions/SOL005_def.yaml#/definitions/Link"

  NsChangeNotification:

    description: >

      This type represents an NS change notification, which informs the receiver of changes on an NS instance caused by 

      an LCM operation occurrence, which directly or indirectly impacts its NS component and is triggered without any context 

      of this NS instance. In other words, this notification is triggered by an LCM operation occurrence on one of the components 

      of the NS instance where aforementioned LCM operation occurrence is not associated to an NS LCM operation occurrence on 

      the NS instance itself. Examples for such operations are a VNF LCM operation on a constituent VNF instance e.g. requested 

      by an EM or automatically triggered by a VNFM, or an NS LCM operation on a constituent NS instance executed by either the 

      same NFVO or another NFVO than the one managing the current NS instance.

      This notification is different from the NsLcmOperationOccurrenceNotification (see clause 6.5.2.5), which is triggered by 

      the NS LCM operation occurrence on the current NS instance itself. 

      It shall comply with the provisions defined in table 6.5.2.8 1. The support of the notification is mandatory.

      The trigger conditions include:

      1) NS LCM operation occurrence which directly or indirectly impacts the NS component (start and result).

      If this is a notification about the start of an LCM operation occurrence impacting the NS component, the notification

      shall be sent as soon as the impact on the NS component is identified.

      If this is a notification about a final result state of an NS LCM operation occurrence impacting the NS component, the

      notification shall be sent after the impact on the NS component has been executed.

    type: object

    required:

      - id