Adding ssa_db_helper_mode and proper delimiters for each mode

The modes are:
[1] SSA_DB_HELPER_STANDARD - binary data format
[2] SSA_DB_HELPER_DEBUG - data text format separated by ':' delimiter
[3] SSA_DB_HELPER_HUMAN - human readable format including field names

Signed-off-by: Ilya Nelkenbaum <ilyan@mellanox.com>