build: add files on relocatable package to support generating .rpm/.deb
build: add files on relocatable package to support generating .rpm/.deb

We are missing some files on relocatable package to generate .rpm/.deb,
add them.

Signed-off-by: Takuya ASADA <4ebfb6f510af412d6e89fefa3ab96d9c8b5e3fff@scylladb.com>

avikivity/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla