create creds.json with envvars

creds.json

@@ -0,0 +1,14 @@
+{
+  "hedns":{
+    "username": "$HE_USERNAME",
+    "password": "$HE_PASSWORD",
+    "totp-key": "$HE_TOTPKEY"
+  },
+  "cloudflare": {
+    "apitoken": "$CF_APITOKEN",
+    "accountid": "$CF_ACCOUNTID"
+  },
+  "digitalocean": {
+    "token": "$DO_TOKEN"
+  }
+}