fix(groups): return JSON when requesting specific group

This is opposed to returning YAML, which is inconsistent with the format
of the data returned from other API endpoints. Instead of returning a
YAML document like:

  description: ""
  data:
    foo: bar
  file:
    content:
    - 35
    - 35
    [...snip...]
    - 101
    - 10
    name: ""
    encoding: base64

a JSON document with a proper base64-encoded config is returned:

  {
    "file": {
      "content": "IyM[...snip...]ZQo=",
      "encoding": "base64",
      "filename": ""
    },
    "meta-data": {
      "foo": "bar"
    },
    "name": "tester"
  }

Author: synackd

cmd/cloud-init-server/group_handlers.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/OpenCHAMI/cloud-init/pkg/cistore"
 	"github.com/go-chi/chi/v5"
-	yaml "gopkg.in/yaml.v2"
 )
 
 // GetGroups godoc
@@ -107,7 +106,7 @@ func (h CiHandler) GetGroupHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	bytes, err = yaml.Marshal(data)
+	bytes, err = json.Marshal(data)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return