Unify JSON attribute naming ot use kebab style case. Cleanup configuration.

configs/config.json

@@ -5,22 +5,22 @@
     "https-key-file": "/etc/letsencrypt/live/url/privkey.pem",
     "user": "clustercockpit",
     "group": "clustercockpit",
-    "apiAllowedIPs": [
+    "api-allowed-ips": [
       "*"
     ],
     "short-running-jobs-duration": 300,
     "enable-job-taggers": true,
     "resampling": {
-      "minimumPoints": 600,
+      "minimum-points": 600,
       "trigger": 180,
       "resolutions": [
         240,
         60
       ]
     },
-    "apiSubjects": {
-      "subjectJobEvent": "cc.job.event",
-      "subjectNodeState": "cc.node.state"
+    "api-subjects": {
+      "subject-job-event": "cc.job.event",
+      "subject-node-state": "cc.node.state"
     }
   },
   "nats": {
@@ -42,8 +42,8 @@
     "kind": "s3",
     "endpoint": "http://x.x.x.x",
     "bucket": "jobarchive",
-    "accessKey": "xx",
-    "secretKey": "xx",
+    "access-key": "xx",
+    "secret-key": "xx",
     "retention": {
       "policy": "move",
       "age": 365,