packages are more generic

- if config is needed, it has a file in vars/
- all imported vars for pkgs are namespaced with _<pkgname>

tasks/pkgs/go.yml

@@ -1,4 +1,4 @@
 ---
 - name: append to pkgs
   set_fact:
-    srcpkgs: "{{ srcpkgs + [ 'build/go.yml' ] }}"
+    srcpkgs: "{{ srcpkgs + [ 'go' ] }}"