component/hugo: add hugo component into slapos

component/hugo/buildout.cfg

+[buildout]
+extends =
+  ../golang/buildout.cfg
+  ../../stack/slapos.cfg
+
+parts =
+  slapos-cookbook
+  gowork
+
+[hugo-get]
+<= go-git-package
+go.importpath = github.com/gohugoio/hugo
+repository    = https://github.com/gohugoio/hugo.git
+revision      = f6821b88abbc1237af0e28cefbc624e6cda3305a
+
+[gowork]
+install =
+  ${hugo-get:location}:./...
+environment =
+  CGO_ENABLED = 1
+buildflags = --tags extended
+
+[gowork.goinstall]
+depends_gitfetch  =
+    ${hugo-get:recipe}
+
+command = set -e
+  . ${gowork:env.sh}
+  cd ${hugo-get:location}
+  go build ${gowork:buildflags} -o ${gowork:bin}/hugo
+
+[hugo]
+<= gowork.goinstall