Fixes for PvC running on PvC with sidecar FreeIPA (#120)

* Add guard condition around setup FreeIPA client task
* Remove psycopg2 install during db configuration

Signed-off-by: Jim Enright <jenright@cloudera.com>

roles/deployment/databases/tasks/postgresql.yml

@@ -14,14 +14,6 @@
 
 ---
 
-- name: Ensure psycopg2 is installed
-  package:
-    name: "{{ ((hostvars[item]['ansible_os_family'] == 'RedHat') and (hostvars[item]['ansible_distribution_major_version'] == '7')) | ternary('python-psycopg2', 'python3-psycopg2') }}"
-  with_items: "{{ databases | json_query('*.host') | unique }}"
-  delegate_to: "{{ item }}"
-  connection: ssh
-  when: item in groups.db_server
-
 - name: Create database roles
   postgresql_user:
     name: "{{ databases[item].user }}"

roles/infrastructure/krb5_client/tasks/freeipa.yml

@@ -30,6 +30,7 @@
     ipaserver_realm: "{{ krb5_realm }}"
     ipaserver_domain: "{{ krb5_domain | default(krb5_realm | lower) }}"
     ipaclient_servers: "{{ groups['krb5_server'] }}"
+  when: "krb5_kdc_type == 'Red Hat IPA' and 'krb5_server' in groups"
 
 - name: Include Private Cloud config changes
   ansible.builtin.include_tasks: pvc_configs.yml