roles/ipaclient/tasks/install.yml: Set default principal if not set

If use_otp is not enabled, then the principal will be set to "admin" after
the discovery has been done. If use_otp is enabled, then the princial will
be set to "admin" after the join has been done - as admin will not match
with the otp.

roles/ipaclient/tasks/install.yml

@@ -16,6 +16,11 @@
     check: yes
   register: ipadiscovery
 
+- name: Install - Set default principal if no keytab is given and no OTP usage
+  set_fact:
+    ipaclient_principal: admin
+  when: ipaclient_principal is undefined and ipaclient_keytab is undefined and not ipaclient_use_otp | bool
+
 # The following block is executed when using OTP to enroll IPA client
 # ie when ipaclient_use_otp is set.
 # It connects to ipaserver and add the host with --random option in order
@@ -125,6 +130,11 @@
     #debug: yes
   register: ipaapi
 
+- name: Install - Set default principal after OTP usage
+  set_fact:
+    ipaclient_principal: admin
+  when: ipaclient_principal is undefined and ipaclient_keytab is undefined and ipaclient_use_otp | bool
+
 - name: Install - Create IPA NSS database
   ipanss:
     servers: "{{ ipadiscovery.servers }}"