Allow to run tests in Docker

* Adapted tests/test_playbook_runs.py script to allow tests to be
  executed from a docker container.
* Added molecule scenarios to create/destroy test containers and
  respective documentation in tests/README.md.

molecule/resources/playbooks/library

@@ -0,0 +1 @@
+/home/scampos/src/ansible-freeipa/plugins/modules/

molecule/resources/playbooks/module_utils

@@ -0,0 +1 @@
+/home/scampos/src/ansible-freeipa/plugins/module_utils/

molecule/resources/playbooks/prepare-build.yml

@@ -0,0 +1,54 @@
+---
+- name: Converge
+  hosts: all
+  tasks:
+  - name: Ensure IPv6 is ENABLED
+    sysctl:
+      name: "{{ item.name }}"
+      value: "{{ item.value }}"
+      sysctl_set: yes
+      state: present
+      reload: yes
+    with_items :
+      - name: net.ipv6.conf.all.disable_ipv6
+        value: 0
+      - name: net.ipv6.conf.lo.disable_ipv6
+        value: 0
+      - name: net.ipv6.conf.eth0.disable_ipv6
+        value: 1
+
+  - name: stat protected_regular
+    stat:
+      path: /proc/sys/fs/protected_regular
+    register: result
+
+  - name: Ensure fs.protected_regular is disabled
+    sysctl:
+      name: fs.protected_regular
+      value: 0
+      sysctl_set: yes
+      state: present
+      reload: yes
+    when: result.stat.exists
+
+  - name: Ensure sudo package is installed
+    package:
+      name: sudo
+
+  - name: Ensure nss package is updated
+    package:
+      name: nss
+      state: latest
+
+  - include_role:
+      name: ipaserver
+    vars:
+      ipaserver_setup_dns: yes
+      ipaserver_setup_kra: yes
+      ipaserver_auto_forwarders: yes
+      ipaserver_no_dnssec_validation: yes
+      ipaserver_auto_reverse: yes
+      ipaadmin_password: SomeADMINpassword
+      ipadm_password: SomeDMpassword
+      ipaserver_domain: test.local
+      ipaserver_realm: TEST.LOCAL

molecule/resources/playbooks/prepare.yml

@@ -0,0 +1,18 @@
+---
+- name: Converge
+  hosts: all
+  tasks:
+  - name: Ensure lock dirs for DS exists
+    file:
+      state: directory
+      owner: dirsrv
+      group: dirsrv
+      path: "{{ item }} "
+    loop:
+      - /var/lock/dirsrv/
+      - /var/lock/dirsrv/slapd-TEST-LOCAL/
+
+  - name: Ensure IPA server is up an running
+    service:
+      name: ipa
+      state: started

molecule/resources/playbooks/roles

@@ -0,0 +1 @@
+/home/scampos/src/ansible-freeipa/roles