[SO] Update chart with service account

Add service account to requirements.yaml, values.yaml and
deployment/statefulset

Issue-ID: OOM-2718
Signed-off-by: farida azmy <farida.azmy.ext@orange.com>
Change-Id: Ic17b8d9307216a7feeceefe6a1e6f0fe4839a637
diff --git a/kubernetes/so/components/so-cnf-adapter/values.yaml b/kubernetes/so/components/so-cnf-adapter/values.yaml
index 2d6d57b..f3d53c9 100755
--- a/kubernetes/so/components/so-cnf-adapter/values.yaml
+++ b/kubernetes/so/components/so-cnf-adapter/values.yaml
@@ -165,3 +165,8 @@
 tolerations: []
 affinity: {}
 
+#Pods Service Account
+serviceAccount:
+  nameOverride: so-cnf-adapter
+  roles:
+    - read