Additional logs for Mariadb restore strategy
Additional logs for Mariadb restore strategy

This patch adds additional debug log messages when executing
mysqld_safe script phase responsible for root password reset.

Change-Id: I1f2b6dbf28dfddb7d0c57c26873c2cba8e8ff130
Co-Authored-By: Kasper Hasior <ca0bf5ef0cc01a0590d9632c9e1633d5955ca85a@samsung.com>

openstack/trove,openstack/trove