ipatopology modules: Use ipaadmin_ prefix for principal and password

The use of password will conflict with the user password setting and is
not really descriptive. ipaadmin_principal and ipaadmin_password are also
used in the roles.

playbooks/topology/check-topologysegments.yml

@@ -14,7 +14,7 @@
   tasks:
   - name: Add topology segment
     ipatopologysegment:
-      password: "{{ ipaadmin_password }}"
+      ipaadmin_password: "{{ ipaadmin_password }}"
       suffix: "{{ item.suffix }}"
       name: "{{ item.name | default(omit) }}"
       left: "{{ item.left }}"