fix dependencies

tasks/prepare.yml

@@ -8,3 +8,6 @@
     gpgcheck: yes
     enabled: yes
     gpgkey: "https://download.postgresql.org/pub/repos/yum/RPM-GPG-KEY-PGDG-{{ __postgres_version }}"
+  become: True
+  become_user: root
+  when: postgres_repository_enabled | bool

tasks/prepare_redhat_7.yml

@@ -4,7 +4,6 @@
     name: "{{ item }}"
     state: present
   loop:
-    - python2-psycopg2
+    - python-psycopg2
   become: True
   become_user: root
-  when: postgres_repository_enabled | bool

tasks/prepare_redhat_8.yml

@@ -12,6 +12,7 @@
         mode: 0644
         owner: root
         group: root
+      when: postgres_repository_enabled | bool
 
     - name: Install rh8 dependencies
       package:
@@ -21,4 +22,3 @@
         - python3-psycopg2
   become: True
   become_user: root
-  when: postgres_repository_enabled | bool