Add unit test for dialplan pattern matching.

This test works by reading input from arrays to build a sample
dialplan. From there, patterns are attempted to be matched against
said dialplan, with the expected match given. We then search in our
example dialplan to see if we find a match and if what we find matches
what we expected it to match.

(closes issue #16809)
Reported by: lmadsen
Tested by: mmichelson

Review: https://reviewboard.asterisk.org/r/504/



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@246942 65c4cc65-6c06-0410-ace0-fbb531ad65f3