caddy: Create component/caddy

In order to follow proper way, move caddy to the component and reuse it.

component/caddy/buildout.cfg

+[buildout]
+extends =
+  ../../component/golang/buildout.cfg
+  gowork.cfg
+
+parts =
+  gowork
+  caddy
+
+[gowork]
+install =
+  github.com/mholt/caddy
+
+[caddy]
+recipe  = slapos.recipe.cmmi
+path    = ${go_github.com_mholt_caddy:location}
+go      = ${gowork:golang}/bin/go
+configure-command = :
+make-targets =
+make-binary = cd ${:path}/caddy  && ${:go} install -v
+environment =
+  PATH=${pkgconfig:location}/bin:${gowork:golang}/bin:${buildout:bin-directory}:%(PATH)s
+  GOPATH=${gowork:directory}
+output = ${gowork:bin}/caddy

stack/caddy/buildout.cfg

 [buildout]
 extends =
-  ../../component/golang/buildout.cfg
-  ../../stack/slapos.cfg
+  buildout.hash.cfg
+  ../../component/caddy/buildout.cfg
   ../../component/dash/buildout.cfg
-  gowork.cfg
+  ../../stack/slapos.cfg
 
-parts =
-  gowork
+parts +=
   slapos-cookbook
   instance-profile
   template-caddy
-  caddy
-
-[gowork]
-install =
-  github.com/mholt/caddy
 
 [instance-profile]
 recipe = slapos.recipe.template
-url = ${:_profile_base_location_}/instance.cfg.in
-md5sum = 403f86b667f7a5d397993735bcd162ab
+url = ${:_profile_base_location_}/${:filename}
 output =${buildout:directory}/instance.cfg
-filename = instance.cfg
 mode = 0644
 
 [template-caddyfile]
 recipe = slapos.recipe.build:download
-url = ${:_profile_base_location_}/Caddyfile.in
-md5sum = 05b8347df3c5803a18a515687a3504e3
-filename = Caddyfile.in
+url = ${:_profile_base_location_}/${:filename}
 location = ${buildout:parts-directory}/${:_buildout_section_name_}
 mode = 0644
 
 [template-caddy]
 recipe = slapos.recipe.template
-url = ${:_profile_base_location_}/instance-caddy.cfg.in
-md5sum = 4ed3a50a15a793fec330332be30a9f3a
+url = ${:_profile_base_location_}/${:filename}
 output = ${buildout:directory}/instance-caddy.cfg.in
 mode = 0644
 
 [template-public-html]
 recipe = slapos.recipe.template
-url =  ${:_profile_base_location_}/templates/index.html
-md5sum = b5794ac8b10ed90173ad566e6e324b35
+url =  ${:_profile_base_location_}/${:filename}
 output =  ${buildout:directory}/index.html
 mode = 0644
 
 [template-caddy-service]
 recipe = slapos.recipe.template
-url = ${:_profile_base_location_}/template-caddy-service.sh.in
-md5sum = 1736f72c7c76afe133753389da7c0b1f
+url = ${:_profile_base_location_}/${:filename}
 output = ${buildout:directory}/template-caddy-service.sh.in
 mode = 0644
-
-[caddy]
-recipe  = slapos.recipe.cmmi
-path    = ${go_github.com_mholt_caddy:location}
-go      = ${gowork:golang}/bin/go
-configure-command = :
-make-targets =
-make-binary = cd ${:path}/caddy  && ${:go} install -v
-environment =
-  PATH=${pkgconfig:location}/bin:${gowork:golang}/bin:${buildout:bin-directory}:%(PATH)s
-  GOPATH=${gowork:directory}
-output =  ${gowork:bin}/caddy
\ No newline at end of file

stack/caddy/buildout.hash.cfg

+# THIS IS NOT A BUILDOUT FILE, despite purposedly using a compatible syntax.
+# The only allowed lines here are (regexes):
+# - "^#" comments, copied verbatim
+# - "^[" section beginings, copied verbatim
+# - lines containing an "=" sign which must fit in the following categorie.
+#   - "^\s*filename\s*=\s*path\s*$" where "path" is relative to this file
+#     But avoid directories, they are not portable.
+#     Copied verbatim.
+#   - "^\s*hashtype\s*=.*" where "hashtype" is one of the values supported
+#     by the re-generation script.
+#     Re-generated.
+# - other lines are copied verbatim
+# Substitution (${...:...}), extension ([buildout] extends = ...) and
+# section inheritance (< = ...) are NOT supported (but you should really
+# not need these here).
+
+[template-caddyfile]
+filename = Caddyfile.in
+md5sum = 05b8347df3c5803a18a515687a3504e3
+
+[template-caddy]
+filename = instance-caddy.cfg.in
+md5sum = 3c9266056397efbc4cececb1f60f40cf
+
+[template-public-html]
+filename = templates/index.html
+md5sum = b5794ac8b10ed90173ad566e6e324b35
+
+[template-caddy-service]
+filename = template-caddy-service.sh.in
+md5sum = 1736f72c7c76afe133753389da7c0b1f
+
+[instance-profile]
+filename = instance.cfg.in
+md5sum = 403f86b667f7a5d397993735bcd162ab