feat: create redisha module

- manage redis/sentinel clusters
- ensure ulimit_managed is false
- dynamically find servers in role to identify master
- add redisadm and sentineladm commands
- add script to check if the current host in the master

modules/redisha/manifests/params.pp

@@ -0,0 +1,25 @@
+class redisha::params (
+  Boolean $redisha_members_lookup = false,
+  Optional[String]  $redisha_members_role = undef,
+  Array   $redisha_servers = [],
+
+  # both
+  Stdlib::Host $redis_host = $facts['networking']['ip'],
+  Stdlib::Port $redis_port = 6379,
+  Optional[String] $requirepass = undef,
+
+  # redis
+  Optional[String] $dnf_module_stream  = '6',
+  Integer[1] $databases = 16,
+  Optional[Variant[String, Sensitive[String], Deferred]] $masterauth = $redisha::params::requirepass,
+
+  # sentinel
+  String[1] $master_name  = 'mymaster',
+  Optional[Variant[String, Sensitive[String]]] $auth_pass = $redisha::params::requirepass,
+  Integer[1] $quorum = 2,
+  Enum['yes', 'no'] $sentinel_resolve_hostnames = 'yes',
+  Enum['yes', 'no'] $sentinel_announce_hostnames = 'yes',
+  Stdlib::Host $sentinel_announce_ip = $facts['networking']['ip'],
+  Array[Stdlib::IP::Address] $sentinel_bind = [$facts['networking']['ip']],
+  Stdlib::Port $sentinel_port = 26379,
+){}