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/init.pp

@@ -0,0 +1,14 @@
+# manage RedisHA
+class redisha (
+  Boolean $manage_repo = $redisha::params::manage_repo,
+  Boolean $redisha_members_lookup = $redisha::params::redisha_members_lookup,
+  Optional[String] $redisha_members_role = $redisha::params::redisha_members_role,
+  Array   $redisha_servers = $redisha::params::redisha_servers,
+) inherits redisha::params {
+
+  include redisha::redis
+  include redisha::sentinel
+  include redisha::tools
+
+  Class['redisha::redis'] -> Class['redisha::sentinel'] -> Class['redisha::tools']
+}