Use mysql_install_db only with uniq defaults-extra-file
Use mysql_install_db only with uniq defaults-extra-file

Executing mysql_install_db with the defaults-extra-file set to the
global option file can produce errors with duplicates. For example it
happens when 'ignore-db-dir' option passed to $override_options in
mysql::server class. Same as https://bugs.mysql.com/bug.php?id=69441

edestecd/puppetlabs-mysql,hundredacres/puppetlabs-mysql,breuninger-ecom/puppetlabs-mysql,markasammut/puppetlabs-mysql,squarit/puppetlabs-mysql,markasammut/puppetlabs-mysql,apa-it/puppetlabs-mysql,apa-it/puppetlabs-mysql,DavidS/puppetlabs-mysql,edestecd/puppetlabs-mysql,simp/puppetlabs-mysql,Adaptavist/puppet-mysql,puppetlabs/puppetlabs-mysql,simp/puppetlabs-mysql,DavidS/puppetlabs-mysql,Adaptavist/puppet-mysql,squarit/puppetlabs-mysql,ndelic0/puppetlabs-mysql,breuninger-ecom/puppetlabs-mysql,hundredacres/puppetlabs-mysql,breuninger-ecom/puppetlabs-mysql,skyscrapers/puppetlabs-mysql,jbondpdx/puppetlabs-mysql,fuel-infra/puppetlabs-mysql,jbondpdx/puppetlabs-mysql,skyscrapers/puppetlabs-mysql,ndelic0/puppetlabs-mysql,fuel-infra/puppetlabs-mysql,puppetlabs/puppetlabs-mysql