It seems that scp is sometimes very slow (unclear what causes it as it's
not always the same). Packing up the files with tar performs a lot
better in these situations. And copying the files to multiple hosts
in parallel additionally helps to reduce the time required for these
steps.
Using --overwrite and -h preserves existing symlinks (e.g. for the users
file in /etc/freeradius/3.0) and overwrites the target file instead.
The -m option ignores timestamps when extracting the files as some target
files will be newer than the source. Using -h when packing up files in
load-testconfig allows using symlinks in the test config dirs to files
on the host running the tests.
Tobias Brunner
353d5c130b