Fix opserver test. port_bmap package has been removed from opserver/test in a recent commit which cause test failure. Restoring the same.

Change-Id: I1c1189741b222fc2e37662a4741d875b3f9ef495
Merge "Fix opserver test. port_bmap package has been removed from opserver/test in a recent commit which cause test failure. Restoring the same."