Checking that remote commands exits with code 0

Change-Id: I0deb9c31b236aeb5ff4745318d9f9bbc9eab4a41
diff --git a/libraries/utils.robot b/libraries/utils.robot
index f19d035..e1d74bc 100755
--- a/libraries/utils.robot
+++ b/libraries/utils.robot
@@ -1215,6 +1215,7 @@
     Log    ${stdout}
     Log    ${stderr}
     Log    ${rc}
+    Should Be Equal    ${rc}    0
     SSHLibrary.Close Connection
     [Return]    ${stdout}    ${stderr}    ${rc}