Drop Puppet < 6.1.0 support

Puppet 4 and Puppet 5 are end of life.

Puppet 6.1.0 is a common version that has some features/bugfixes over
6.0.0. It probably works with that as well, but in practice nobody
should run those old versions anyway.

Author: ekohl

manifests/current.pp

@@ -36,7 +36,7 @@
 #
 class access_insights_client::current (
   $package_name = 'insights-client',
-  $log_level = undef,
+  Optional[Enum['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL']] $log_level = undef,
   $auto_config = 'True',
   $authmethod = undef,
   $username = undef,

manifests/init.pp

@@ -37,7 +37,7 @@
 # Copyright 2015 Red Hat Inc.
 #
 class access_insights_client (
-  $log_level = undef,
+  Optional[Enum['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL']] $log_level = undef,
   $auto_config = 'True',
   $authmethod = undef,
   $username = undef,
@@ -49,7 +49,7 @@
   $auto_update = undef,
   $obfuscate = undef,
   $obfuscate_hostname = undef,
-  $deployment_style = undef,
+  Optional[Enum['current', 'old']] $deployment_style = undef,
 ) {
   if $deployment_style {
     $class_name = $deployment_style

metadata.json

@@ -21,7 +21,7 @@
   "requirements": [
     {
       "name": "puppet",
-      "version_requirement": ">= 3.8.0 < 8.0.0"
+      "version_requirement": ">= 6.1.0 < 8.0.0"
     }
   ]
 }