[scripts] Add only the conf directory for the relevant binding to the classpath, rather than all of them.
[scripts] Add only the conf directory for the relevant binding to the
classpath, rather than all of them.

brianfrankcooper/YCSB,cricket007/YCSB,ChristianNavolskyi/YCSB,ChristianNavolskyi/YCSB,leschekhomann/YCSB,zyguan/ycsb,manolama/YCSB,brianfrankcooper/YCSB,madhurihn/YCSB_ToyDB,jaemyoun/YCSB,manolama/YCSB,cricket007/YCSB,ChristianNavolskyi/YCSB,leschekhomann/YCSB,madhurihn/YCSB_ToyDB,leschekhomann/YCSB,zyguan/ycsb,brianfrankcooper/YCSB,manolama/YCSB,cricket007/YCSB,leschekhomann/YCSB,madhurihn/YCSB_ToyDB,madhurihn/YCSB_ToyDB,jaemyoun/YCSB,manolama/YCSB,jaemyoun/YCSB,jaemyoun/YCSB,zyguan/ycsb,cricket007/YCSB,ChristianNavolskyi/YCSB,brianfrankcooper/YCSB,zyguan/ycsb