Add gc e2e test case

Signed-off-by: wang yan <wangyan@vmware.com>

tests/resources/Harbor-Pages/Configuration.robot

@@ -276,3 +276,19 @@ Delete A Label
     Capture Page Screenshot
     Click Element  xpath=//clr-modal//div//button[contains(.,'DELETE')]
     Wait Until Page Contains Element  //clr-tab-content//div[contains(.,'${labelname}')]/../div/clr-icon[@shape="success-standard"]
+
+## Garbage Collection	
+Switch To Garbage Collection
+    Sleep  1
+    Click Element  xpath=${configuration_xpath}
+    Wait Until Page Contains Element  ${garbage_collection_xpath} 
+    Click Element  xpath=${garbage_collection_xpath}
+
+Click GC Now
+    Sleep  1
+    Click Element  xpath=${gc_now_xpath}
+    Sleep  2
+
+View GC Details
+    Click Element  xpath=${gc_log_details_xpath}
+    Sleep  2

tests/resources/Harbor-Pages/Configuration_Elements.robot

@@ -21,4 +21,7 @@ ${self_reg_xpath}  //input[@id="clr-checkbox-selfReg"]
 ${test_ldap_xpath}  /html/body/harbor-app/harbor-shell/clr-main-container/div/div/config/div/div/div/button[3]
 ${config_save_button_xpath}  //config//div/button[contains(.,'SAVE')]
 ${configuration_xpath}  //clr-vertical-nav-group-children/a[contains(.,'Configuration')]
-${system_config_xpath}  //*[@id="config-system"]
+${system_config_xpath}  //*[@id="config-system"]
+${garbage_collection_xpath}  //*[@id="config-gc"]
+${gc_now_xpath}  //*[@id="gc"]/gc-config/button
+${gc_log_details_xpath}  /html/body/harbor-app/harbor-shell/clr-main-container/div/div/config/div/div/section[6]/gc-config/clr-datagrid/div/div/div/clr-dg-table-wrapper/div[2]/clr-dg-row/div/clr-dg-cell[6]/a

tests/robot-cases/Group1-Nightly/Common.robot

@@ -37,6 +37,35 @@ Test Case - Vulnerability Data Not Ready
     Switch To Configure
     Go To Vulnerability Config
     Vulnerability Not Ready Config Hint
+
+Test Case - Garbage Collection
+    Init Chrome Driver
+    ${d}=   Get Current Date    result_format=%m%s
+    
+    Sign In Harbor  ${HARBOR_URL}  ${HARBOR_ADMIN}  ${HARBOR_PASSWORD}
+    Create An New Project  project${d}
+    Push Image  ${ip}  ${HARBOR_ADMIN}  ${HARBOR_PASSWORD}  project${d}  hello-world
+    Sleep  2
+    Go Into Project  project${d}
+    Delete Repo  project${d}
+
+    Switch To Garbage Collection
+    Click GC Now
+    Logout Harbor
+    Sleep  2
+    Sign In Harbor  ${HARBOR_URL}  ${HARBOR_ADMIN}  ${HARBOR_PASSWORD}
+    Switch To Garbage Collection
+    Sleep  1
+    Wait Until Page Contains  Finished
+
+    ${rc}  ${output}=  Run And Return Rc And Output  curl -u ${HARBOR_ADMIN}:${HARBOR_PASSWORD} -s --insecure -H "Content-Type: application/json" -X GET "https://${ip}/api/system/gc/2/log"
+    Log To Console  ${output}
+    Should Be Equal As Integers  ${rc}  0
+    Should Contain  ${output}  3 blobs eligible for deletion
+    Should Contain  ${output}  Deleting blob:
+    Should Contain  ${output}  success to run gc in job.
+
+    Close Browser
     
 Test Case - Create An New Project
     Init Chrome Driver
@@ -616,22 +645,6 @@ Test Case - Project Level Image Serverity Policy
     Cannot pull image  ${ip}  ${HARBOR_ADMIN}  ${HARBOR_PASSWORD}  library  haproxy
     Close Browser
 
-Test Case - Admin Push Signed Image
-    Enable Notary Client
-
-    ${rc}  ${output}=  Run And Return Rc And Output  docker pull hello-world:latest
-    Log  ${output}
-
-    Push image  ${ip}  ${HARBOR_ADMIN}  ${HARBOR_PASSWORD}  library  hello-world:latest
-    ${rc}  ${output}=  Run And Return Rc And Output  ./tests/robot-cases/Group0-Util/notary-push-image.sh ${ip} ${notaryServerEndpoint}
-    Log  ${output}
-    Should Be Equal As Integers  ${rc}  0
-
-    ${rc}  ${output}=  Run And Return Rc And Output  curl -u admin:Harbor12345 -s --insecure -H "Content-Type: application/json" -X GET "https://${ip}/api/repositories/library/tomcat/signatures"
-    Log To Console  ${output}
-    Should Be Equal As Integers  ${rc}  0
-    Should Contain  ${output}  sha256
-
 Test Case - List Helm Charts
     Init Chrome Driver
     ${d}=   Get Current Date    result_format=%m%s
@@ -663,3 +676,19 @@ Test Case - List Helm Charts
 
     Go Back To Versions And Delete
     Close Browser
+
+Test Case - Admin Push Signed Image
+    Enable Notary Client
+
+    ${rc}  ${output}=  Run And Return Rc And Output  docker pull hello-world:latest
+    Log  ${output}
+
+    Push image  ${ip}  ${HARBOR_ADMIN}  ${HARBOR_PASSWORD}  library  hello-world:latest
+    ${rc}  ${output}=  Run And Return Rc And Output  ./tests/robot-cases/Group0-Util/notary-push-image.sh ${ip} ${notaryServerEndpoint}
+    Log  ${output}
+    Should Be Equal As Integers  ${rc}  0
+
+    ${rc}  ${output}=  Run And Return Rc And Output  curl -u admin:Harbor12345 -s --insecure -H "Content-Type: application/json" -X GET "https://${ip}/api/repositories/library/tomcat/signatures"
+    Log To Console  ${output}
+    Should Be Equal As Integers  ${rc}  0
+    Should Contain  ${output}  sha256