Bug#26412663 MEMCACHED.MEMC_297_CRASH: REMOVE DEPENDANCY ON PERL MODULES

             DBI AND DBD::MYSQL

The test memcached.memc_297_crash is being skipped on many machines due to
the unavailability of DBI and DBD::mysql perl modules. It has been altered
to use the mysql client binary bundled with the build.

Reviewed-by: Aditya A <aditya.a@oracle.com>

Author: Srikanth B R