Prefer exact matches
Prefer exact matches

If there are multiple matches for a given VSL tag (such as "Hit"
matching both Hit and HitPass), prefer the one that is an exact match.

Fixes #1288

varnish/Varnish-Cache,zhoualbeart/Varnish-Cache,alarky/varnish-cache-doc-ja,franciscovg/Varnish-Cache,varnish/Varnish-Cache,zhoualbeart/Varnish-Cache,ajasty-cavium/Varnish-Cache,alarky/varnish-cache-doc-ja,alarky/varnish-cache-doc-ja,franciscovg/Varnish-Cache,gquintard/Varnish-Cache,gauthier-delacroix/Varnish-Cache,franciscovg/Varnish-Cache,gauthier-delacroix/Varnish-Cache,gauthier-delacroix/Varnish-Cache,varnish/Varnish-Cache,chrismoulton/Varnish-Cache,1HLtd/Varnish-Cache,varnish/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,zhoualbeart/Varnish-Cache,chrismoulton/Varnish-Cache,gquintard/Varnish-Cache,gauthier-delacroix/Varnish-Cache,feld/Varnish-Cache,1HLtd/Varnish-Cache,ajasty-cavium/Varnish-Cache,chrismoulton/Varnish-Cache,franciscovg/Varnish-Cache,varnish/Varnish-Cache,mrhmouse/Varnish-Cache,alarky/varnish-cache-doc-ja,feld/Varnish-Cache,ajasty-cavium/Varnish-Cache,zhoualbeart/Varnish-Cache,mrhmouse/Varnish-Cache,gquintard/Varnish-Cache,franciscovg/Varnish-Cache,chrismoulton/Varnish-Cache,gauthier-delacroix/Varnish-Cache,feld/Varnish-Cache,mrhmouse/Varnish-Cache,1HLtd/Varnish-Cache,ajasty-cavium/Varnish-Cache,mrhmouse/Varnish-Cache,zhoualbeart/Varnish-Cache,1HLtd/Varnish-Cache,mrhmouse/Varnish-Cache,alarky/varnish-cache-doc-ja,chrismoulton/Varnish-Cache,ajasty-cavium/Varnish-Cache,feld/Varnish-Cache