Update selinux policies for mysqld

mysqld fails to startup when selinux is in enforcing mode. This is
because the data and logs were moved under /mnt/state and the selinux
policies were not updated to allow mysql access to the new locations.

Change-Id: I5ccf1078ad0edc066bab430580886ed6c253e153
Merge "Update selinux policies for mysqld"