Increasing the rpc timeouts of olt adapter so that the grpc retries wont be exhausted by the time voltha core recovers from a crash

Change-Id: Ib6f58fe01046ddcb8ce71f89faa2351bae9b487e
diff --git a/voltha-adapter-openolt/Chart.yaml b/voltha-adapter-openolt/Chart.yaml
index 0fd266f..f8cab2d 100644
--- a/voltha-adapter-openolt/Chart.yaml
+++ b/voltha-adapter-openolt/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha-adapter-openolt"
-version: "2.12.1"
+version: "2.12.4"
 description: "A Helm chart for Voltha OpenOLT Adapter"
 keywords:
   - "onf"