[VOL-5222] - Upgrade golang version for VOLTHA jobs

.gitreview
VERSION
----------
  o post-release tasks.  Repository tagged and banched.
  o Add missing newlines at EOF.
  o go.mod syntax does not allow *-dev suffix so update
    master VERSION from v5.5.0-dev to v5.5.0.  Community
    can introduce a dev version when needed.

go/*.pb.og
vendor/*.go
-----------
  o invoke make mod-update to regenerate go.sum and friends.
  o lint clenaups: find . -name '*.go' -print | xargs -n1 gofmt -s -e -w

Change-Id: I3da80c0ce5600679b388e309bfa4702f1ec3212b
diff --git a/vendor/google.golang.org/grpc/balancer/balancer.go b/vendor/google.golang.org/grpc/balancer/balancer.go
index bcc6f54..37ef74a 100644
--- a/vendor/google.golang.org/grpc/balancer/balancer.go
+++ b/vendor/google.golang.org/grpc/balancer/balancer.go
@@ -385,11 +385,11 @@
 // RecordTransition records state change happening in subConn and based on that
 // it evaluates what aggregated state should be.
 //
-//  - If at least one SubConn in Ready, the aggregated state is Ready;
-//  - Else if at least one SubConn in Connecting, the aggregated state is Connecting;
-//  - Else if at least one SubConn is TransientFailure, the aggregated state is Transient Failure;
-//  - Else if at least one SubConn is Idle, the aggregated state is Idle;
-//  - Else there are no subconns and the aggregated state is Transient Failure
+//   - If at least one SubConn in Ready, the aggregated state is Ready;
+//   - Else if at least one SubConn in Connecting, the aggregated state is Connecting;
+//   - Else if at least one SubConn is TransientFailure, the aggregated state is Transient Failure;
+//   - Else if at least one SubConn is Idle, the aggregated state is Idle;
+//   - Else there are no subconns and the aggregated state is Transient Failure
 //
 // Shutdown is not considered.
 func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State {