InfluxDB backend: added integer values suffix

Author: awegrzyn

examples/1-Basic.cxx

@@ -18,8 +18,10 @@ int main(int argc, char *argv[]) {
   // myMetric is the name of the metric
   //  
   // 1. by copying values
-  Monitoring::Get().send(10, "myMetric");
+  Monitoring::Get().send(10, "myMetricInt");
+  Monitoring::Get().send(10.10, "myMetricFloat");
 
   // 2. by creating and moving metric object
-  Monitoring::Get().send({10, "myMetric"});
+  Monitoring::Get().send({10, "myMetricInt"});
+  Monitoring::Get().send({10.10, "myMetricFloat"});
 }	

src/Backends/InfluxDB.cxx

@@ -62,6 +62,10 @@ void InfluxDB::send(const Metric& metric)
     value.insert(value.begin(), '"');
     value.insert(value.end(), '"');
   }
+
+  if (metric.getType() == MetricType::INT) {
+    value.insert(value.end(), 'i');
+  }
   std::string name = metric.getName();
   escape(name);