Update charts to be able to exclude imagePullSecretName

Summary

• Provide an ability to optionally exclude imagePullSecretName field by updating charts that use it without with blocks (for example https://repo1.dso.mil/big-bang/product/packages/anchore-enterprise/-/blob/main/chart/templates/bigbang/sso/configure-sso.yaml?ref_type=heads#L16 )