use voltha-tracing from local folder instead of chart repo

* to align with the other charts that are pulled in from the local
  directories, voltha-tracing should also be pulled in like that
* the current version of voltha-tracing in the local folder in the
  repository is 1.0.4, so we need to also increase the version required
  in voltha-infra while changing the repository location
* update the voltha chart version to please the linter
* update voltha-infra chart version to 2.12.0 to align with the release
  process of reflecting the voltha version in the helm chart version

Signed-off-by: Jan Klare <jan.klare@bisdn.de>
Change-Id: Ic0c0fb045f6e3453a1add069c5eb91db227b94a8
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index 71c115c..8b80f14 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha"
-version: "2.12.8"
+version: "2.12.9"
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
   - "onf"