GSLB_Pool - missing minimum members up feature

[npmaslow]

Is your feature request related to a problem? Please describe.

The AS3 schema for GTM GSLB_Pool is missing the minimum members up feature. This is preventing us from being able to impose this feature on pools that have multiple members. As is referenced in tmsh list command: list gtm pool a _my_pool_name__pool all-properties min-members-up-mode off min-members-up-value 0

Describe the solution you'd like

What we require would be to be able to set the AS3 GSLB_Pool - minimum members up feature where required.