Revert "pgsql::database::populate: require module `grep'"

This reverts commit 9bb68c42a0169220d92a6c3408c7416f90529877.

Conflicts:
	.vagrant-puppet/modules/pgsql/manifests/database/populate.pp
Revert "mysql::database::populate: require module `grep'"

This reverts commit 645a2ec3804157e6958056b39b0ae1cb2c720091.

Conflicts:
	.vagrant-puppet/modules/mysql/manifests/database/populate.pp
Revert "Add module `grep'"

This reverts commit 01807c26a777dc3c9e6ce8893745b5bf8a1c4097.