[VOL-5506] Disable service monitor by default

Change-Id: Ia0d553fb428e859e320518ca6d58ad8b125ffe05
Signed-off-by: Abhay Kumar <abhay.kumar@radisys.com>
diff --git a/voltha-adapter-openolt/values.yaml b/voltha-adapter-openolt/values.yaml
index d0cf273..10af85f 100644
--- a/voltha-adapter-openolt/values.yaml
+++ b/voltha-adapter-openolt/values.yaml
@@ -90,6 +90,9 @@
   tracing_agent:
     address: jaeger-agent:6831
 
+serviceMonitor:
+    enable: false
+
 # Expose the golang pprof webserver, if enabled
 profiler:
   enabled: false