fix for mpMetrics hotspot under Enabling vendor metrics for the microservices, and Adding MicroProfile Metrics to the inventory service (#334)

Signed-off-by: Siaa Gor <Siaa.Gor@ibm.com>
Co-authored-by: Gilbert Kwan <gkwan@ca.ibm.com>
Co-authored-by: Siaa Gor <Siaa.Gor@ibm.com>

Author: SiaaG-dev

finish/src/main/liberty/config/server.xml

@@ -8,7 +8,9 @@
     <feature>jsonb</feature>
     <feature>cdi</feature>
     <feature>mpConfig</feature>
-   <feature>mpMetrics</feature>
+    <!-- tag::mpMetrics[] -->
+    <feature>mpMetrics</feature>
+    <!-- end::mpMetrics[] -->
    <feature>mpRestClient</feature>
  </featureManager>