ipa[server,replica,client]: New setting X_install_packages

With these settings for server, replica and client it is possible to skip
package installation. This is for example useful if the packages are already
installed. The settings default to yes

The setting ipareplica_no_package_install has been removed.

roles/ipareplica/tasks/install.yml

@@ -1,26 +1,29 @@
 ---
 # tasks file for ipareplica
 
-- name: Install - Ensure IPA replica packages are installed
-  package:
-    name: "{{ item }}"
-    state: present
-  with_items: "{{ ipareplica_packages }}"
-  when: not ipareplica_no_package_install | bool
+- block:
 
-- name: Install - Ensure IPA replica packages for dns are installed
-  package:
-    name: "{{ item }}"
-    state: present
-  with_items: "{{ ipareplica_packages_dns }}"
-  when: not ipareplica_no_package_install | bool and ipareplica_setup_dns | bool
+  - name: Install - Ensure IPA replica packages are installed
+    package:
+      name: "{{ item }}"
+      state: present
+    with_items: "{{ ipareplica_packages }}"
 
-- name: Install - Ensure IPA replica packages for adtrust are installed
-  package:
-    name: "{{ item }}"
-    state: present
-  with_items: "{{ ipareplica_packages_adtrust }}"
-  when: not ipareplica_no_package_install | bool and ipareplica_setup_adtrust | bool
+  - name: Install - Ensure IPA replica packages for dns are installed
+    package:
+      name: "{{ item }}"
+      state: present
+    with_items: "{{ ipareplica_packages_dns }}"
+    when: ipareplica_setup_dns | bool
+
+  - name: Install - Ensure IPA replica packages for adtrust are installed
+    package:
+      name: "{{ item }}"
+      state: present
+    with_items: "{{ ipareplica_packages_adtrust }}"
+    when: ipareplica_setup_adtrust | bool
+
+  when: ipareplica_install_packages | bool
 
 - name: Install - Include Python2/3 import test
   import_tasks: "{{role_path}}/tasks/python_2_3_test.yml"