travis: Add GOARCH 386 test
travis: Add GOARCH 386 test

Closes #2847

digitalcraftsman/hugo,tubo028/hugo,anthonyfok/hugo,mitchchn/hugo,fedelibre/hugo,MarkDBlackwell/hugo,tubo028/hugo,fedelibre/hugo,anthonyfok/hugo,digitalcraftsman/hugo,gohugoio/hugo,mdhender/hugo,mitchchn/hugo,mdhender/hugo,MarkDBlackwell/hugo,gohugoio/hugo,mdhender/hugo,gohugoio/hugo,anthonyfok/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo