- add Parameter "sensitive" to Function postgresql_password to decide if its Returnvalue should be of Datatype Sensitive
- let defined Type postgresql::server::role accept Datatype Sensitive for $password_hash
- let defined Type postgresql::server::db accept Datatype Sensitive for $password
- let Class postgresql::server accept Datatype Sensitive for $postgres_password
- let defined Type postgresql::validate_db_connection accept Sensitive for $database_password

Starting with 79fa355 it is not
possible to set a custom encoding on systems where initdb is not needed
(e.g. Debian).  The autorequire introduce a circular dependency:

```
dependency cycles found: (Anchor[postgresql::server::service::begin] =>
                          Postgresql_psql[Set template1 encoding to UTF-8] =>
                          Class[Postgresql::Server::Initdb] =>
                          Postgresql_conf[listen_addresses] =>
                          Class[Postgresql::Server::Service] =>
                          Anchor[postgresql::server::service::begin])
```

Move the relevant code from postgresql::server::initdb to
postgresql::server::late_initdb and include it when applicable so that
the postgresql_psql command gets run after the service has started up.

The file() function can read a file form a module and return the
content. This happens server side and is included in the catalog. This
saves a request to the fileserver at runtime. That request can fail for
various reasons (it's still a network). It also means that a cached
catalog is sufficient and an agent can reapply it without a Puppetserver
running. These files are small enough to inline in the catalog.

Inline file contents in the catalog

Fix changing default encoding

Use Puppet-Datatype Sensitive for Passwords

…_debian_8_support

(IAC-1598) - Remove Support for Debian 8

Release prep v7.5.0