(VOL-4953)enabling retry codes in open-olt-adaptor

Enabling retry codes in open-olt-adaptor grpc-client so that it retries the grpc requests to the voltha-core
in case the core is unavailable or the request times out
(retry for pipeline)
Change-Id: Iae93e445ed6363b5fd654bdc1cbe3e53778b2a67
diff --git a/go.sum b/go.sum
index ae47da0..9767712 100644
--- a/go.sum
+++ b/go.sum
@@ -198,8 +198,8 @@
 github.com/onsi/gomega v1.10.3/go.mod h1:V9xEwhxec5O8UDM77eCW8vLymOMltsqPVYWrpDsH8xc=
 github.com/onsi/gomega v1.14.0 h1:ep6kpPVwmr/nTbklSx2nrLNSIO62DoYAhnPNIMhK8gI=
 github.com/onsi/gomega v1.14.0/go.mod h1:cIuvLEne0aoVhAgh/O6ac0Op8WWw9H6eYCriF+tEHG0=
-github.com/opencord/voltha-lib-go/v7 v7.4.1 h1:8tLKwQMOxkBb2vvKtDfUx8uoD2p2lkogwxJDd/PFaIA=
-github.com/opencord/voltha-lib-go/v7 v7.4.1/go.mod h1:3XnWQBHALGZTm5n3j401zKGG9aL2UqSU3/owGwNmcxM=
+github.com/opencord/voltha-lib-go/v7 v7.4.2 h1:0VnlWxVFZXOF52515upTwIze3KRoFmUcJyKQAo1aKOI=
+github.com/opencord/voltha-lib-go/v7 v7.4.2/go.mod h1:3XnWQBHALGZTm5n3j401zKGG9aL2UqSU3/owGwNmcxM=
 github.com/opencord/voltha-protos/v5 v5.3.8 h1:tL8I1wtOfuMnKMQvgN1Ul+8YL/LTBm0PpNuxU1usGDw=
 github.com/opencord/voltha-protos/v5 v5.3.8/go.mod h1:ZGcyW79kQKIo7AySo1LRu613E6uiozixrCF0yNB/4x8=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=