Fix Heal02 error when flavor already exists

Change-Id: I9fd2d4cf332de4e0f367a2518b6f61db10749885
Signed-off-by: aguilard <e.dah.tid@telefonica.com>
diff --git a/robot-systest/lib/openstack_lib.robot b/robot-systest/lib/openstack_lib.robot
index 19dddc9..b654cfd 100644
--- a/robot-systest/lib/openstack_lib.robot
+++ b/robot-systest/lib/openstack_lib.robot
@@ -196,7 +196,7 @@
     [Arguments]   ${flavor_name}   ${cpu}=1   ${ram}=1024   ${disk}=10
 
     Should Not Be Empty   ${flavor_name}
-    ${rc}   ${flavor_id}=   Run and Return RC and Output   openstack flavor create ${flavor_name} --ram ${ram} --disk ${disk} --vcpus ${cpu} -f yaml | yq -r '.id'
+    ${rc}   ${flavor_id}=   Run and Return RC and Output   openstack flavor create ${flavor_name} --ram ${ram} --disk ${disk} --vcpus ${cpu} -c id -f value
     Log   ${flavor_id}
     Should Be Equal As Integers   ${rc}   ${success_return_code}
     [Return]   ${flavor_id}