Use sample database for testing init_database
Use sample database for testing init_database

Also, because list of database is an array maintained per process and
every invocation of SequenceServer.init adds to the same list we need
to clear the list of scanned databased before testing init_database
works correctly.

Signed-off-by: Anurag Priyam <6e6ab5ea9cb59fe7c35d2a1fc74443577eb60635@gmail.com>

yeban/sequenceserver,yeban/sequenceserver,yeban/sequenceserver,yeban/sequenceserver