install: install config files under etc/beeeon/server
install: install config files under etc/beeeon/server

Hiding all server-specific configuration files under "beeeon/server"
allows to coexist with other BeeeOn projects on a single machine.

Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server