configverify: T5880: raise exception if interfaces sourced form dynamic interfaces

Interfaces matching the following regex (ppp|pppoe|sstpc|l2tp|ipoe)[0-9]+ can
not be used as source-interface for e.g. a tunnel.

The main reason is that these are dynamic interfaces which come and go from a
kernel point of view, thus it's not possible to bind an interface to them.

(cherry picked from commit 5062f5d313548d6ebb9c07fee6b6d6be25b8f8f0)