Enable functionality to allow disk modifications

Description:
Servers migrated to HPE Greenlake using Zerto often maintain their Custom VMWare plan in Morpheus. All costing and environment sizing were done based on running with current resources. If servers do not have a plan that matches one of those available for selection in Greenlake, modifications to add/resize disks are not possible. This functionality needs to be allowed because disk changes in this mode will cause an outage, leading to a degradation of current service. Can this functionality be enabled?


Example/Use case(s):
(Replace with mock workflow/example/diagram when applicable)