test: add functional test for Sort step
test: add functional test for Sort step

Change-Id: Ifa0350c431fdc83a4f254cf5b946faf5f5cef81e
Reviewed-on: https://softwarefactory-project.io/r/6994
Reviewed-by: Sylvain Afchain <b9baee1c2e4cc202620c6529e0c0bd3dbc38b6dc@gmail.com>
Tested-by: Sylvain Afchain <b9baee1c2e4cc202620c6529e0c0bd3dbc38b6dc@gmail.com>
Workflow: Sylvain Afchain <b9baee1c2e4cc202620c6529e0c0bd3dbc38b6dc@gmail.com>
Tested-by: Jenkins CI <d95b56ce41a2e1ac4cecdd398defd7414407cc08@softwarefactory-project.io>

lebauce/skydive,safchain/skydive,safchain/skydive,lebauce/skydive,safchain/skydive,safchain/skydive,safchain/skydive,lebauce/skydive,skydive-project/skydive,skydive-project/skydive,skydive-project/skydive,lebauce/skydive,skydive-project/skydive,lebauce/skydive,lebauce/skydive,skydive-project/skydive,safchain/skydive,skydive-project/skydive,skydive-project/skydive,safchain/skydive,safchain/skydive,lebauce/skydive,lebauce/skydive