Fix mysql_grant acceptance test
Fix mysql_grant acceptance test

mysql_grant now checks for mysql command

markasammut/puppetlabs-mysql,fuel-infra/puppetlabs-mysql,DavidS/puppetlabs-mysql,puppetlabs/puppetlabs-mysql,puppetlabs/puppetlabs-mysql,simp/puppetlabs-mysql,Adaptavist/puppet-mysql,markasammut/puppetlabs-mysql,Adaptavist/puppet-mysql,DavidS/puppetlabs-mysql,simp/puppetlabs-mysql,fuel-infra/puppetlabs-mysql