Update to github.com/safchain/ethtool@latest (influxdata#6975)

go.mod

@@ -100,7 +100,7 @@ require (
 	github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829
 	github.com/prometheus/client_model v0.0.0-20190115171406-56726106282f
 	github.com/prometheus/common v0.2.0
-	github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8
+	github.com/safchain/ethtool v0.0.0-20200128171343-ef7e7c9c2763
 	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec // indirect
 	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b // indirect
 	github.com/shirou/gopsutil v2.19.11+incompatible

go.sum

@@ -379,8 +379,8 @@ github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1 h1:/K3IL0Z1quvmJ
 github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a h1:9ZKAASQSHhDYGoxY8uLVpewe1GDZ2vu2Tr/vTdVAkFQ=
 github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
-github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8 h1:2c1EFnZHIPCW8qKWgHMH/fX2PkSabFc5mrVzfUNdg5U=
-github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8/go.mod h1:Z0q5wiBQGYcxhMZ6gUqHn6pYNLypFAvaL3UvgZLR0U4=
+github.com/safchain/ethtool v0.0.0-20200128171343-ef7e7c9c2763 h1:rzR7qhaYDEzb9ba9+hNyRWCYuMFGPmzFDoo1QPM9KC0=
+github.com/safchain/ethtool v0.0.0-20200128171343-ef7e7c9c2763/go.mod h1:Z0q5wiBQGYcxhMZ6gUqHn6pYNLypFAvaL3UvgZLR0U4=
 github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec h1:6ncX5ko6B9LntYM0YBRXkiSaZMmLYeZ/NWcmeB43mMY=
 github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec/go.mod h1:gi+0XIa01GRL2eRQVjQkKGqKF3SF9vZR/HnPullcV2E=
 github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b h1:gQZ0qzfKHQIybLANtM3mBXNUtOfsCFXeTsnBqCsx1KM=