Nik Everett 61597f2c20 Send error_trace by default when testing (#22195)
Sends the `error_trace` parameter with all requests sent by the
yaml test framework, including the doc snippet tests. This can be
overridden by settings `error_trace: false`. While this drift's
core's handling of the yaml tests from the client's slightly this
should only be a problem for tests that rely on the default value,
both of which I've fixed by setting the value explicitly.

This also escapes `\n` and `\t` in the `Stash dump on failure` so
the `stack_trace` is more readable.

Also fixes `RestUpdateSettingsAction` to not think of the `error_trace`
parameter as a setting.
2016-12-15 13:35:14 -05:00
..