Which fonts are available on the build bots?

[Regina Henschel]

Hi all,

I have a build failure in a unit test, likely because a font is not 
available and the replacement font has a different metric.
(https://ci.libreoffice.org/job/gerrit_master_ml/17954/)

Which fonts are available on all build bots? Is there a font in place, 
which covers "CJK Unified Ideographs"?

If not, can someone give me a string with CJK characters (shorter than 
16 characters) and tell me a suitable font of the build bots for that 
string?

Kind regards,
Regina