VOL-1615 Initial content for voltha-helm-charts

Change-Id: Ie4e46ae374ec508378814d8c615b866d2591fd09
diff --git a/.gitignore b/.gitignore
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+# local chart repo dir used when building the http-accessible repo
+chart_repo
+
+# lockfiles for requirements.yaml for dependent charts
+requirements.lock
+
+# sub charts directoies, created by helm dep ...
+charts