Test release export times out during cloning repositories

 2019-08-15 13:30:54,695 INFO:run_tests.py:118(14345): test_getDocProjects (__main__.TestReleaseExportTool) ... Executing <Handle <TaskWakeupMethWrapper object at 0x7f07cbcc4588>(<_GatheringFu.../tasks.py:549>) created at /usr/lib/python3.6/asyncio/tasks.py:648> took 0.191 seconds
 2019-08-15 13:30:54,695 INFO:run_tests.py:118(14345): 2019-08-15 13:30:19,939 INFO:repositorymanager.py:106(24979): Cloning missing repository tqtc-boot2qt/emulator from ssh://codereview.qt-project.org:29418/tqtc-boot2qt/emulator to /home/qt/ci-working-dir/git-repos/qt-project/tqtc-boot2qt/emulator
 2019-08-15 13:30:54,695 INFO:run_tests.py:118(14345): 2019-08-15 13:30:19,955 INFO:repositorymanager.py:106(24979): Cloning missing repository qt-apps/neptune3-ui from ssh://codereview.qt-project.org:29418/qt-apps/neptune3-ui to /home/qt/ci-working-dir/git-repos/qt-project/qt-apps/neptune3-ui
 2019-08-15 13:30:54,695 INFO:run_tests.py:118(14345): 2019-08-15 13:30:19,968 INFO:repositorymanager.py:106(24979): Cloning missing repository qt-apps/qmllive from ssh://codereview.qt-project.org:29418/qt-apps/qmllive to /home/qt/ci-working-dir/git-repos/qt-project/qt-apps/qmllive
 2019-08-15 13:30:54,696 INFO:run_tests.py:118(14345): 2019-08-15 13:30:19,977 INFO:repositorymanager.py:106(24979): Cloning missing repository qt/qtapplicationmanager from ssh://codereview.qt-project.org:29418/qt/qtapplicationmanager to /home/qt/ci-working-dir/git-repos/qt-project/qt/qtapplicationmanager
 2019-08-15 13:30:54,696 INFO:run_tests.py:118(14345): 2019-08-15 13:30:20,027 INFO:repositorymanager.py:106(24979): Cloning missing repository qt/qtivi from ssh://codereview.qt-project.org:29418/qt/qtivi to /home/qt/ci-working-dir/git-repos/qt-project/qt/qtivi
 2019-08-15 13:30:54,696 INFO:run_tests.py:118(14345): 2019-08-15 13:30:20,030 INFO:repositorymanager.py:106(24979): Cloning missing repository qt-apps/qtwebbrowser from ssh://codereview.qt-project.org:29418/qt-apps/qtwebbrowser to /home/qt/ci-working-dir/git-repos/qt-project/qt-apps/qtwebbrowser
 2019-08-15 13:30:54,696 INFO:run_tests.py:118(14345): ERROR