Fixed a failing test.
Fixed a failing test.

We need to set the vlan back to available when we delete the
corresponding network.

henn/hil,lokI8/haas,meng-sun/hil,SahilTikale/switchHaaS,apoorvemohan/haas,henn/hil,henn/hil_sahil,SahilTikale/haas,henn/hil_sahil,CCI-MOC/haas,kylehogan/hil,kylehogan/hil,henn/haas,meng-sun/hil,apoorvemohan/haas,kylehogan/haas