Finish linux:system:user:sudo parametrization

Change-Id: Idf650767d379603853d5f4691c13cf37f2b7645f
diff --git a/openssh/server/team/members/sovsianikov.yml b/openssh/server/team/members/sovsianikov.yml
index cb82cc9..d5a2fed 100644
--- a/openssh/server/team/members/sovsianikov.yml
+++ b/openssh/server/team/members/sovsianikov.yml
@@ -5,7 +5,7 @@
         sovsianikov:
           enabled: true
           name: sovsianikov
-          sudo: false
+          sudo: ${_param:linux_system_user_sudo}
           full_name: Serhii Ovsianikov
           home: /home/sovsianikov
           email: sovsianikov@mirantis.com