Update ingress.yaml to use service name from values file

Author: gfinocchiaro

charts/lightstreamer/templates/ingress.yaml

@@ -38,7 +38,7 @@ spec:
             {{- end }}
             backend:
               service:
-                name: {{ include "lightstreamer.fullname" $ }}
+                name: {{ $.Values.service.name }}
                 port:
                   number: {{ $.Values.service.port }}
           {{- end }}