feat: Update webserver robot test suite

This commit updates the webserver robot test suite to reflect the changes made to the code. The test cases have been modified to check if the webserver is installed correctly, can be configured, works as expected, and can be removed correctly. Additionally, the backend URL retrieval has been updated to reflect the changes in the code.

Note: The commit message has been generated based on the provided code changes and recent commits.

tests/webserver.robot

@@ -8,33 +8,33 @@ Retry test
     Wait Until Keyword Succeeds    60 seconds    1 second    ${keyword}
 
 Backend URL is reachable
-    ${rc} =    Execute Command    curl -f ${backend_url}
+    ${rc} =    Execute Command    curl -f ${backend_url}/sftpgo
     ...    return_rc=True  return_stdout=False
     Should Be Equal As Integers    ${rc}  0
 
 
 *** Test Cases ***
-Check if mattermost is installed correctly
+Check if webserver is installed correctly
     ${output}  ${rc} =    Execute Command    add-module ${IMAGE_URL} 1
     ...    return_rc=True
     Should Be Equal As Integers    ${rc}  0
     &{output} =    Evaluate    ${output}
     Set Suite Variable    ${module_id}    ${output.module_id}
 
-Check if mattermost can be configured
+Check if webserver can be configured
     ${rc} =    Execute Command    api-cli run module/${module_id}/configure-module --data '{"path":"/sftpgo","http2https": true,"sftp_tcp_port": 2092,"sftpgo_service": true}'
     ...    return_rc=True  return_stdout=False
     Should Be Equal As Integers    ${rc}  0
 
-Retrieve mattermost backend URL
+Retrieve webserver backend URL
     # Assuming the test is running on a single node cluster
     ${response} =    Run task     module/traefik1/get-route    {"instance":"${module_id}"}
     Set Suite Variable    ${backend_url}    ${response['url']}
 
-Check if mattermost works as expected
+Check if webserver works as expected
     Retry test    Backend URL is reachable
 
-Check if mattermost is removed correctly
+Check if webserver is removed correctly
     ${rc} =    Execute Command    remove-module --no-preserve ${module_id}
     ...    return_rc=True  return_stdout=False
     Should Be Equal As Integers    ${rc}  0