Finish linux:system:user:sudo parametrization

Change-Id: Idf650767d379603853d5f4691c13cf37f2b7645f
diff --git a/openssh/server/team/members/rsafonov.yml b/openssh/server/team/members/rsafonov.yml
index 3409c92..9965a1b 100644
--- a/openssh/server/team/members/rsafonov.yml
+++ b/openssh/server/team/members/rsafonov.yml
@@ -5,7 +5,7 @@
         rsafonov:
           enabled: true
           name: rsafonov
-          sudo: false
+          sudo: ${_param:linux_system_user_sudo}
           full_name: Roman Safonov
           home: /home/rsafonov
           email: rsafonov@mirantis.com