Retry the login to docker hub (vmware#8022)

Author: mhagen-vmware

tests/test-cases/Group3-Docker-Compose/3-01-Docker-Compose-LEMP.robot

@@ -18,11 +18,15 @@ Resource  ../../resources/Util.robot
 Suite Setup  Install VIC Appliance To Test Server  certs=${True}
 Suite Teardown  Cleanup VIC Appliance On Test Server
 
-*** Test Cases ***
-Compose LEMP Server
+*** Keywords ***
+Login To Docker Hub
     ${rc}  ${output}=  Run And Return Rc And Output  docker %{VCH-PARAMS} login --username=victest --password=%{REGISTRY_PASSWORD}
     Should Be Equal As Integers  ${rc}  0
 
+*** Test Cases ***
+Compose LEMP Server
+    Wait Until Keyword Succeeds  12x  10s  Login To Docker Hub
+
     Set Environment Variable  COMPOSE_HTTP_TIMEOUT  300
 
     ${vch_ip}=  Get Environment Variable  VCH_IP  %{VCH-IP}

tests/test-cases/Group3-Docker-Compose/3-02-Docker-Compose-Voting-App.robot

@@ -18,11 +18,15 @@ Resource  ../../resources/Util.robot
 Suite Setup  Install VIC Appliance To Test Server  certs=${True}
 Suite Teardown  Cleanup VIC Appliance On Test Server
 
-*** Test Cases ***
-Compose Voting App
+*** Keywords ***
+Login To Docker Hub
     ${rc}  ${output}=  Run And Return Rc And Output  docker %{VCH-PARAMS} login --username=victest --password=%{REGISTRY_PASSWORD}
     Should Be Equal As Integers  ${rc}  0
 
+*** Test Cases ***
+Compose Voting App
+    Wait Until Keyword Succeeds  12x  10s  Login To Docker Hub
+
     Set Environment Variable  COMPOSE_HTTP_TIMEOUT  300
 
     ${rc}  ${out}=  Run And Return Rc And Output  docker-compose %{COMPOSE-PARAMS} --skip-hostname-check -f ${CURDIR}/../../../demos/compose/voting-app/docker-compose.yml up -d