New helloworld endpoint useful when diagnosing

api_auth_docker/api-sample.properties

@@ -1,6 +1,7 @@
 # The file api.properties generated by the installer should look like this.
 
 # Stats can:
+action_helloworld=stats
 action_getblockchaininfo=stats
 action_installation_info=stats
 action_getmempoolinfo=stats

cyphernodeconf_docker/templates/gatekeeper/api.properties

@@ -4,6 +4,7 @@
 # Admin can do what the spender can do plus even more stuff
 
 # Stats can:
+action_helloworld=stats
 action_getblockchaininfo=stats
 action_installation_info=stats
 action_getmempoolinfo=stats

cyphernodeconf_docker/templates/installer/testfeatures.sh

@@ -100,7 +100,7 @@ checknotifier() {
   local response
   local returncode
 
-  response=$(mosquitto_rr -h broker -W 15 -t notifier -e "response/$$" -m "{\"response-topic\":\"response/$$\",\"cmd\":\"web\",\"url\":\"http://proxy:8888/getbestblockhash\"}")
+  response=$(mosquitto_rr -h broker -W 15 -t notifier -e "response/$$" -m "{\"response-topic\":\"response/$$\",\"cmd\":\"web\",\"url\":\"http://proxy:8888/helloworld\"}")
   returncode=$?
   [ "${returncode}" -ne "0" ] && return 115
   http_code=$(echo "${response}" | jq ".http_code" | tr -d '"')

proxy_docker/app/script/requesthandler.sh

@@ -72,6 +72,11 @@ main()
         trace "[main] line=${line}"
       fi
       case "${cmd}" in
+        helloworld)
+          # GET http://192.168.111.152:8080/helloworld
+          response_to_client "Hello, world!" 0
+          break
+          ;;
         installation_info)
           # GET http://192.168.111.152:8080/info
           if [ -f "$DB_PATH/info.json" ]; then
@@ -286,7 +291,7 @@ main()
           ;;
         getmempoolinfo)
           # curl GET http://192.168.111.152:8080/getmempoolinfo
-          
+
           response=$(get_mempool_info)
           response_to_client "${response}" ${?}
           break