Set frame-ancestors to none if none are filled

[rullzer]

frame-ancestors doesn't fall back to default-src. So when we apply a
very restricted CSP we should make sure to set it to 'none' and not
leave it empty.

Signed-off-by: Roeland Jago Douma roeland@famdouma.nl

[juliusknorr]

Seems some tests need adjustments.

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 35668: failure

mysql8.0-php7.4

Show full log

There were 2 warnings:
1) Test\Files\ViewTest::testRenameFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static
2) Test\Files\ViewTest::testCopyFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static
--
There was 1 failure:
1) Test\Files\ObjectStore\ObjectStoreStorageTest::testMoveOverwrite with data set #1 ('/source.txt', '/target with space.txt')
Expected /target with space.txt to be a copy of /drone/src/tests/data/lorem.txt
Failed asserting that false matches expected 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\n
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.\n
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.\n
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.'.
/drone/src/tests/lib/Files/Storage/Storage.php:222
/drone/src/tests/lib/Files/Storage/Storage.php:277

[rullzer]

/backport to stable20

[rullzer]

/backport to stable20