Add Debian packaging files.

Signed-off-by: Benoit Sigoure <tsunanet@gmail.com>
Change Debian architecture from `any' to `all'.

This is to build an architecture-independent package.

Signed-off-by: Benoit Sigoure <tsunanet@gmail.com>
Add a Couchbase collector.

Signed-off-by: Benoit Sigoure <tsunanet@gmail.com>