Nightly fail on apiMain/quota.feature on assertion

[SagarGi]

Build: https://drone.owncloud.com/owncloud/encryption/2564/31/19

Scenario: apiMain/quota.feature:358

 @files_sharing-app-required @skipOnOcV10.8 @skipOnOcV10.9 @skipOnOcV10.10
  Scenario: share receiver of a share with insufficient quota should not be able to copy from home folder to the received shared file # /var/www/owncloud/testrunner/tests/acceptance/features/apiMain/quota.feature:358
    Given the administrator has set the default folder for received shares to "Shares"                                                # OccContext::theAdministratorHasSetTheDefaultFolderForReceivedSharesTo()
    And auto-accept shares has been disabled                                                                                          # FeatureContext::autoAcceptSharesHasBeenDisabled()
    And user "Brian" has been created with default attributes and without skeleton files                                              # FeatureContext::userHasBeenCreatedWithDefaultAttributesAndWithoutSkeletonFiles()
    And the quota of user "Brian" has been set to "10 MB"                                                                             # FeatureContext::theQuotaOfUserHasBeenSetTo()
    And the quota of user "Alice" has been set to "10 B"                                                                              # FeatureContext::theQuotaOfUserHasBeenSetTo()
    And user "Alice" has uploaded file with content "short" to "/testquota.txt"                                                       # FeatureContext::userHasUploadedAFileWithContentTo()
    And user "Brian" has uploaded file with content "longer line of text" to "/testquota.txt"                                         # FeatureContext::userHasUploadedAFileWithContentTo()
    And user "Alice" has shared file "/testquota.txt" with user "Brian"                                                               # FeatureContext::userHasSharedFileWithUserUsingTheSharingApi()
    And user "Brian" has accepted share "/testquota.txt" offered by user "Alice"                                                      # FeatureContext::userHasReactedToShareOfferedBy()
    When user "Brian" copies file "/testquota.txt" to "/Shares/testquota.txt" using the WebDAV API                                    # FeatureContext::userCopiesFileUsingTheAPI()
    Then the HTTP status code should be "507"                                                                                         # FeatureContext::thenTheHTTPStatusCodeShouldBe()
    And the DAV exception should be "Sabre\DAV\Exception\InsufficientStorage"                                                         # FeatureContext::theDavElementShouldBe()
    And as "Brian" file "/Shares/testquota.txt" should exist                                                                          # FeatureContext::asFileOrFolderShouldExist()
    And as "Alice" file "/testquota.txt" should exist                                                                                 # FeatureContext::asFileOrFolderShouldExist()
    And the content of file "/testquota.txt" for user "Alice" should be "short"                                                       # FeatureContext::contentOfFileForUserShouldBe()
      The downloaded content was expected to be 'short', but actually is '<?xml'. HTTP status was 500
      Failed asserting that two strings are equal.
      --- Expected
      +++ Actual
      @@ @@
      -'short'
      +'<?xml'

Recently the quota handling issue has been fixed owncloud/core#40140. Needs investigation

[grgprarup]

The findings of an investigation on this issue are reported here #357. @SagarGi For now we can skip this scenario for the encryption app as suggested in #354 (comment). So closing this issue, we can follow up on the reported issue.