build.sphinx_ext: cast result to string instead of unicode
build.sphinx_ext: cast result to string instead of unicode

Casting the result of eval to unicode will not work in Python 3, use
str(result) instead.

Signed-off-by: Apollon Oikonomopoulos <ed81ed0a45ccd5c8869bda52e38353a6299ee39e@dmesg.gr>

ganeti/ganeti,ganeti/ganeti,mbakke/ganeti,ganeti/ganeti,mbakke/ganeti,mbakke/ganeti