dnfmodule: update documentation about affected OSes

Author: bastelfreak

Diff for: REFERENCE.md

@@ -654,8 +654,7 @@ Default value: `undef`
 Data type: `Boolean`
 
 Manage the DNF module. This only makes sense on distributions that use DNF
-package manager, such as EL8 or Fedora. It also requires Puppet 5.5.20+ or
-Puppet 6.15.0+ since they ship the dnfmodule provider.
+package manager, such as EL8, EL9 or Fedora.
 
 Default value: `false`
 

Diff for: manifests/dnfmodule.pp

@@ -1,6 +1,6 @@
 # @summary Manage the DNF module
 #
-# On EL8 and Fedora DNF can manage modules. This is a method of providing
+# On EL8 and newer and Fedora DNF can manage modules. This is a method of providing
 # multiple versions on the same OS. Only one DNF module can be active at the
 # same time.
 #

Diff for: manifests/globals.pp

@@ -96,8 +96,7 @@
 # @param manage_package_repo Sets up official PostgreSQL repositories on your host if set to true.
 # @param manage_dnf_module
 #   Manage the DNF module. This only makes sense on distributions that use DNF
-#   package manager, such as EL8 or Fedora. It also requires Puppet 5.5.20+ or
-#   Puppet 6.15.0+ since they ship the dnfmodule provider.
+#   package manager, such as EL8, EL9 or Fedora.
 # @param module_workdir
 #   Specifies working directory under which the psql command should be executed.
 #   May need to specify if '/tmp' is on volume mounted with noexec option.