VOL-1984 replace gopkg.in sarama import

Change-Id: I2dbd20ffd21e58146fc67bf44e6faef77206bd2d
diff --git a/Gopkg.toml b/Gopkg.toml
index e96b529..fa3d2b8 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -48,6 +48,10 @@
   version = "2.1.15"
 
 [[constraint]]
+  name = "github.com/Shopify/sarama"
+  version = "1.20.1"
+
+[[constraint]]
   branch = "master"
   name = "github.com/cevaris/ordered_map"
 
@@ -95,10 +99,6 @@
   name = "google.golang.org/grpc"
   version = "1.17.0"
 
-[[constraint]]
-  name = "gopkg.in/Shopify/sarama.v1"
-  version = "1.20.1"
-
 [prune]
   go-tests = true
   unused-packages = true