Filter out switch port descriptions on Ruckus switches

Some Ruckus switches, e.g. the Ruckus ICX 7150, advertise switch
interface names as switch port descriptions. Unlike Dell switches, there
is no space character between port type and port number. For example:
GigabitEthernet1/1/9.

Update regular expression to match both styles.

Change-Id: I359b07abadc8665ff0a8c3407ca0fc5effc504cf
Story: 2007532
Task: 39343