Select volumes for migration by ID of project

Select volumes from list by ID of project picked for migration.
Add admin role for pumphouse main user

When migrating tenant, add pumphouse main user (admin) to the tenant in
destination cloud with 'admin' role. This is required on multiple occasions when
pumphouse needs to operate in tenant context without switching to another user.
Especially useful for a project workload migration as many resources only have
tenant as an owner.