kdc: allow custom log location + move logging configuration to appropriate file

[jusstol]

The locations of krb5libs.log, krb5kdc.log and kadmind.log are hard coded in roles/ldap_kerberos/templates/krb5.conf.j2 :

tdp-collection-prerequisites/roles/ldap_kerberos/templates/krb5.conf.j2

Lines 3 to 6 in d67f0ae

	[logging]
	default = FILE:/var/log/krb5libs.log
	kdc = FILE:/var/log/krb5kdc.log
	admin_server = FILE:/var/log/kadmind.log

Can we create new variables to allow some customization ?

---

Also, according to the MIT, the krb5.conf file may contain the following sections :

• [libdefaults]
• [realms]
• [domain_realm]
• [capaths]
• [appdefaults]
• [plugins]

And the kdc.conf file may contain the following ones :

• [kdc_defaults]
• [realms]
• [dbdefaults]
• [dbmodules]
• [logging] 👈

Even if there is the includedir /etc/krb5.conf.d/ at the top, I feel like the logging section should move to the kdc.conf.j2 template to comply with the documentation.