bump etcd-metrics-server nsync

[Delivers #80174420]

diff --git a/packages/etcd_metrics_server/spec b/packages/etcd_metrics_server/spec
index c530f9d..8e2ed9e 100644
--- a/packages/etcd_metrics_server/spec
+++ b/packages/etcd_metrics_server/spec
@@ -50,4 +50,6 @@ files:
   - github.com/onsi/gomega/types/*.go # gosub
   - github.com/pivotal-golang/lager/*.go # gosub
   - github.com/tedsuo/ifrit/*.go # gosub
+  - github.com/tedsuo/ifrit/grouper/*.go # gosub
+  - github.com/tedsuo/ifrit/proxy/*.go # gosub
   - github.com/tedsuo/ifrit/sigmon/*.go # gosub
Submodule src/github.com/cloudfoundry-incubator/etcd-metrics-server 928168b..1609fce:
  > Use NatsClientRunner to connect to NATS
Submodule src/github.com/cloudfoundry-incubator/nsync 854bb21..dd73ce3:
  > Use NatsClientRunner to connect to NATS

Signed-off-by: Abhijit Hiremagalur <abhi@pivotal.io>