Need ppc64le support for testing-mysql-server

[ArchaB]

Further to port presto-mysql to ppc64le VM, package fails as the internally used testing-mysql-server does not have support for ppc64le. (Please refer to earlier issue: prestodb/presto#6152)

As part of providing the support. Edited the mysql-connector-mxj-db-files-5.0.12.jar created when the package builds.
Changes done were to create a 'Linuz-ppc64le' folder in the jar and copy the ppc64le compatible mysql and mysqld file into it.

As mentioned on the issue, would need testing-mysql-server to support ppc64le.

[ArchaB]

Need help on if the support does exist and any configuration changes required from my side

[ArchaB]

Gentle reminder