Exclude tst_qxmlstream test for INTEGRITY

- There is no possibility to unpack *.zip archive anywhere on test device or save any file.
  Currently we don't have mounted file system.

Task-number: QTBUG-99123
Pick-to: 6.2 6.3
Change-Id: I8c8d272a92b4475a7548bd10d32fc4203672926b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

tests/auto/corelib/serialization/CMakeLists.txt

@@ -13,6 +13,6 @@ if(TARGET Qt::Network)
     add_subdirectory(qtextstream)
 endif()
 # QTBUG-87671 # special case
-if(TARGET Qt::Network AND TARGET Qt::Xml AND NOT ANDROID)
+if(TARGET Qt::Network AND TARGET Qt::Xml AND NOT ANDROID AND NOT INTEGRITY)
     add_subdirectory(qxmlstream)
 endif()