We should use service-aliases and not the primary host name, as
that makes migration between machines hard.
Change-Id: Idd49f27c9b08c6cfd077f85276a3dedc4cf117ef
otherwise we'll get:
make: Entering directory '/build/doc/manuals'
Package osmo-gsm-manuals was not found in the pkg-config search path.
Perhaps you should add the directory containing `osmo-gsm-manuals.pc'
to the PKG_CONFIG_PATH environment variable
No package 'osmo-gsm-manuals' found
Change-Id: I9f3d6e74be9e0fe31a2ee7aad9869ed7568ff6dd