Resolve "Data Race in Change State Manager"

api/initialise_test.go

go.mod

go.sum

interfaces/change/change.go

mocks/Change.go

northbound/server/pnd.go

northbound/server/pnd_test.go

nucleus/change.go

nucleus/change_test.go

nucleus/initialise_test.go

nucleus/principalNetworkDomain.go

nucleus/principalNetworkDomain_test.go

nucleus/store_test.go