VOL-3876: openonu-go adapter goes on a continues loop to delete L2 PM counter if it fails to delete

- also resolve deadlock issue seen during pm config update scenario
- fix some logging
- update timeout value for omci get metrics

Change-Id: Ic27f47eb53bf4a3f7f8b49fc2c16f43ba62446a5
diff --git a/internal/pkg/onuadaptercore/omci_cc.go b/internal/pkg/onuadaptercore/omci_cc.go
index 4776796..dcdbe1b 100644
--- a/internal/pkg/onuadaptercore/omci_cc.go
+++ b/internal/pkg/onuadaptercore/omci_cc.go
@@ -45,7 +45,7 @@
 // ### OMCI related definitions - retrieved from Python adapter code/trace ####
 
 //ConstDefaultOmciTimeout - Default OMCI Timeout
-const ConstDefaultOmciTimeout = 10 // ( 3 ?) Seconds
+const ConstDefaultOmciTimeout = 3
 
 const galEthernetEID = uint16(1)
 const maxGemPayloadSize = uint16(48)