Parent Prefix in Global with Child Prefix in VRF creates orphan Prefix

[DanSheps]

When adding child prefixes to parent prefixes where the child is in a separate VRF then the parent, this causes a orphan prefix where the only access to it is through that VRF. The orphan prefix isn't visible in the prefix list, because the prefix list table considers it a child even though it is in a different VRF.

I ran into this where I placed a parent prefix (/22) in the global VRF, because it isn't assigned to any one single VRF and then put in the child prefix in the individual VRF's.

I am assuming this is based on the fact that you determine a child/parent relationship by VRF and prefix.
#395 discusses changing the functionality of the global prefix, and this is a separate issue from that

[jeremystretch]

This will be covered by whatever work is done to resolve #395 so I'm going to mark this as a duplicate.