Revert "CLI: fix bug in NewFieldAssignment grammar token"
Revert "CLI: fix bug in NewFieldAssignment grammar token"

This reverts commit b142a15251f0fa1a8d839eed693a30eea7583c02.

midokura/python-midonetclient,midokura/python-midonetclient,midonet/python-midonetclient,midonet/python-midonetclient