debuginfod: create indexes to speed up grooming

debuginfod: create indexes to speed up grooming

Create indexes on _r_de and _f_de tables
to speed up delete operations called by groom() function.

Primary keys of those tables are optimalized to search rows
by buildids so delete by file and mtime attributes
has to scan the whole table. On large database can single
delete query take minutes and grooming will be aborted
before completion by time limit.

New indexes are compatible with current sqlite schema.

Signed-off-by: Josef Cejka <jcejka@suse.de>