ENH: Add wiki output format option

Add command line options to specify output format. If --wiki is
specified, a wiki table is written to stdout. This table can be
pasted into a wiki page. The builds and tests have hyperlinks to the
appropriate dashboard pages.

Change-Id: I199faf7046bba5ffdc09826061bd1e08d8d5ca2b
Merge topic 'EnhancedOutputForFailSummary' into master

4e78f9ba ENH: Add wiki output format option