Docker image for mysql inherits a nproc limit from the
CentOS 7 base image, which results in the mysqld process being
limited to 4096 processes, which can be a problem.
Expose a new parameter mysql_nproc_limit in puppet, to
allow overriding that limit in hiera if needed.
Change-Id: I99a771c93bb44f62124b2b44cdddc883ce01fd17
Co-Authored-By: Michele Baldessari <michele@acksyn.org>
Closes-Bug: #1900864