refactor ♻️: Refactoring the Ansible playbook to include new tasks for joining an Active Directory domain.

Added tasks to install required packages, configure Kerberos and Samba, and join the domain. This refactoring improves the automation of the setup process.

templates/smb.conf.j2

@@ -0,0 +1,14 @@
+[global]
+   workgroup = {{ ad_realm.split('.')[0] }}
+   security = ads
+   realm = {{ ad_realm }}
+   winbind use default domain = true
+   winbind offline logon = false
+   dedicated keytab file = /etc/krb5.keytab
+   kerberos method = secrets and keytab
+   idmap config * : backend = tdb
+   idmap config * : range = 10000-20000
+   idmap config {{ ad_realm.split('.')[0] }} : backend = rid
+   idmap config {{ ad_realm.split('.')[0] }} : range = 20001-999999
+   template shell = /bin/bash
+   template homedir = /home/%U