When the psql command runs from a directory it does not have permission to
access, it outputs an error. This error trips up the unless SQL command,
causing the other SQL commands to run even if not needed. Rather than ignore
stderr (which might hide something else), or use an arbitrary directory like
/tmp, this code sets the cwd to the data directory, which will exist and be
owned by the postgres user. If someone uses the postgres_psql type and
customises the psql_user parameter, they should also set an appropriate cwd.
This commit provides a working implementation of a ruby
type/provider (`postgresql_psql` for handling the PSQL
commands. This is a little more flexible than doing it
via Exec resources, which is what the `postgresql::psql`
type was doing.
The old type is still present but now includes a
deprecation notification, and all of the other types
that were using the `::psql` type have been ported over
to use the `postgresql_psql` type instead.
This will allow characters such as '-' in database role
names. Additionally, escaping of '"' characters now applies to all '"'
characters, not just the first in a sql command.
Renamed a few files and made some tweaks to try to get
database_grant, database_user, and database types into
a state where they work very similarly to the ones in
the mysql module. Also introduced a "postgresql_password"
function that can be used to generate an md5 password
hash for a postgres user.
