Normally, PostgreSQL uses a default database name of 'postgres'
for its internal administration, user, table accounting.
Some systems like Puppet Enterprise maintain non-default names.
We add the zproperty, zPostgreSQLDefaultDB, to allow for a non-default
value. The default value for zPostgreSQLDefaultDB remains as 'postgres'.
Normally, PostgreSQL uses a default database name of 'postgres' for its internal administration, user, table accounting. Some systems like Puppet Enterprise maintain non-default names.
We add the zproperty, zPostgreSQLDefaultDB, to allow for a non-default value. The default value for zPostgreSQLDefaultDB remains as 'postgres'.