[stable17] Fix S3 error handling

[backportbot-nextcloud]

backport of #22514

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 32489: failure

webpack-build

• I'm a little sad 🤖 and was not able to find the logs for this failed job - please improve me at https://github.com/MorrisJobke/drone-logs to provide this to you

integration-sharing-v1

• build/integration/features/sharing-v1.feature:58

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  Scenario: Creating a new mail share        # /drone/src/build/integration/features/sharing-v1.feature:58
    Given dummy mail server is listening     # FeatureContext::dummyMailServerIsListening()
[Mon Aug 31 17:41:06 2020] 127.0.0.1:37234 [404]: /ocs/v2.php/cloud/users/user0
[Mon Aug 31 17:41:06 2020] 127.0.0.1:37268 [200]: /ocs/v1.php/cloud/users
[Mon Aug 31 17:41:06 2020] 127.0.0.1:37318 [200]: /ocs/v1.php/cloud/users/user0
[Mon Aug 31 17:41:06 2020] 127.0.0.1:37360 [200]: /ocs/v2.php/cloud/users/user0
    And user "user0" exists                  # FeatureContext::assureUserExists()
    And As an "user0"                        # FeatureContext::asAn()
[Mon Aug 31 17:41:07 2020] {"Exception":"Swift_TransportException","Message":"Connection could not be established with host 127.0.0.1 [Connection refused #111]","Code":0,"Trace":[{"file":"\/drone\/src\/3rdparty\/swiftmailer\/swiftmailer\/lib\/classes\/Swift\/Transport\/StreamBuffer.php","line":58,"function":"establishSocketConnection","class":"Swift_Transport_StreamBuffer","type":"->","args":[]},{"file":"\/drone\/src\/3rdparty\/swiftmailer\/swiftmailer\/lib\/classes\/Swift\/Transport\/AbstractSmtpTransport.php","line":143,"function":"initialize","class":"Swift_Transport_StreamBuffer","type":"->","args":[{"protocol":"","host":"127.0.0.1","port":25,"timeout":10,"blocking":1,"tls":false,"type":1,"stream_context_options":[]}]},{"file":"\/drone\/src\/3rdparty\/swiftmailer\/swiftmailer\/lib\/classes\/Swift\/Mailer.php","line":65,"function":"start","class":"Swift_Transport_AbstractSmtpTransport","type":"->","args":[]},{"file":"\/drone\/src\/lib\/private\/Mail\/Mailer.php","line":185,"function":"send","class":"Swift_Mailer","type":"->","args":[{"__class__":"Swift_Message"},[]]},{"file":"\/drone\/src\/apps\/sharebymail\/lib\/ShareByMailProvider.php","line":444,"function":"send","class":"OC\\Mail\\Mailer","type":"->","args":[{"__class__":"OC\\Mail\\Message"}]},{"file":"\/drone\/src\/apps\/sharebymail\/lib\/ShareByMailProvider.php","line":356,"function":"sendMailNotification","class":"OCA\\ShareByMail\\ShareByMailProvider","type":"->","args":["welcome.txt","http:\/\/localhost:8080\/index.php\/s\/BdSfMs7JaEbkt2H","user0","dumy@test.com",null]},{"file":"\/drone\/src\/apps\/sharebymail\/lib\/ShareByMailProvider.php","line":186,"function":"createMailShare","class":"OCA\\ShareByMail\\ShareByMailProvider","type":"->","args":[{"__class__":"OC\\Share20\\Share"}]},{"file":"\/drone\/src\/lib\/private\/Share20\/Manager.php","line":700,"function":"create","class":"OCA\\ShareByMail\\ShareByMailProvider","type":"->","args":[{"__class__":"OC\\Share20\\Share"}]},{"file":"\/drone\/src\/apps\/files_sharing\/lib\/Controller\/ShareAPIController.php","line":577,"function":"createShare","class":"OC\\Share20\\Manager","type":"->","args":[{"__class__":"OC\\Share20\\Share"}]},{"file":"\/drone\/src\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":170,"function":"createShare","class":"OCA\\Files_Sharing\\Controller\\ShareAPIController","type":"->","args":[{"__class__":"OC\\Files\\Node\\File"},19,4,"dumy@test.com","false","",null,"",""]},{"file":"\/drone\/src\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":99,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\ShareAPIController"},"createShare"]},{"file":"\/drone\/src\/lib\/private\/AppFramework\/App.php","line":126,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\ShareAPIController"},"createShare"]},{"file":"\/drone\/src\/lib\/private\/AppFramework\/Routing\/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files_Sharing\\Controller\\ShareAPIController","createShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"ocs.files_sharing.ShareAPI.createShare"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"_route":"ocs.files_sharing.ShareAPI.createShare"}]},{"file":"\/drone\/src\/lib\/private\/Route\/Router.php","line":297,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"_route":"ocs.files_sharing.ShareAPI.createShare"}]},{"file":"\/drone\/src\/ocs\/v1.php","line":82,"function":"match","class":"OC\\Route\\Router","type":"->","args":["\/ocsapp\/apps\/files_sharing\/api\/v1\/shares"]}],"File":"\/drone\/src\/3rdparty\/swiftmailer\/swiftmailer\/lib\/classes\/Swift\/Transport\/StreamBuffer.php","Line":269,"CustomMessage":"Failed to send share by mail."}
[Mon Aug 31 17:41:07 2020] 127.0.0.1:37386 [401]: /ocs/v1.php/apps/files_sharing/api/v1/shares
    When creating a share with               # FeatureContext::creatingShare()
      | path      | welcome.txt   |
      | shareType | 4             |
      | shareWith | dumy@test.com |
    Then the OCS status code should be "100" # FeatureContext::theOCSStatusCodeShouldBe()
      Failed asserting that SimpleXMLElement Object &0000000026a99c4f0000000004169b1b (
          0 => '403'
      ) matches expected '100'.
    And the HTTP status code should be "200" # FeatureContext::theHTTPStatusCodeShouldBe()
    And last share can be downloaded         # FeatureContext::lastShareCanBeDownloaded()
[Mon Aug 31 17:41:07 2020] 127.0.0.1:37570 [200]: /ocs/v1.php/cloud/users/user0
[Mon Aug 31 17:41:08 2020] 127.0.0.1:37674 [404]: /ocs/v2.php/cloud/users/user0
[Mon Aug 31 17:41:08 2020] Login failed: 'user0' (Remote IP: '127.0.0.1')
[Mon Aug 31 17:41:08 2020] 127.0.0.1:37688 [401]: /remote.php/webdav/myFileToComment.txt
[Mon Aug 31 17:41:08 2020] 127.0.0.1:37692 [207]: /remote.php/dav/systemtags/
[Mon Aug 31 17:41:08 2020] Login failed: 'user0' (Remote IP: '127.0.0.1')
[Mon Aug 31 17:41:08 2020] 127.0.0.1:37724 [401]: /remote.php/webdav/myFileToTag.txt
[Mon Aug 31 17:41:08 2020] 127.0.0.1:37736 [404]: /remote.php/dav/addressbooks/users/admin/MyAddressbook
[Mon Aug 31 17:41:08 2020] 127.0.0.1:37756 [404]: /remote.php/dav/calendars/admin/MyCalendar