New pwpolicy management module

There is a new pwpolicy management module placed in the plugins folder:

  plugins/modules/ipapwpolicy.py

The pwpolicy module allows to ensure presence and absence of pwpolicies for
groups.

Here is the documentation for the module:

  README-pwpolicy.md

New example playbooks have been added:

  playbooks/pwpolicy/pwpolicy_absent.yml
  playbooks/pwpolicy/pwpolicy_present.yml

New tests added for pwpolicy:

  tests/pwpolicy/test_pwpolicy.yml

README-pwpolicy.md

@@ -0,0 +1,102 @@
+Pwpolicy module
+===============
+
+Description
+-----------
+
+The pwpolicy module allows to ensure presence and absence of pwpolicies.
+
+
+Features
+--------
+* Pwpolicy management
+
+
+Supported FreeIPA Versions
+--------------------------
+
+FreeIPA versions 4.4.0 and up are supported by the ipapwpolicy module.
+
+
+Requirements
+------------
+
+**Controller**
+* Ansible version: 2.8+
+
+**Node**
+* Supported FreeIPA version (see above)
+
+
+Usage
+=====
+
+Example inventory file
+
+```ini
+[ipaserver]
+ipaserver.test.local
+```
+
+
+Example playbook to ensure presence of pwpolicies for exisiting group ops:
+
+```yaml
+  tasks:
+  - name: Ensure presence of pwpolicies for group ops
+    ipapwpolicy:
+      ipaadmin_password: MyPassword123
+      name: ops
+      minlife: 7
+      maxlife: 49
+      history: 5
+      priority: 1
+      lockouttime: 300
+      minlength: 8
+      maxfail: 3
+```
+
+Example playbook to ensure absence of pwpolicies for group ops
+
+```yaml
+---
+- name: Playbook to handle pwpolicies
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  # Ensure absence of pwpolicies for group ops
+  - ipapwpolicy:
+      ipaadmin_password: MyPassword123
+      name: ops
+      state: absent
+```
+
+
+Variables
+=========
+
+ipapwpolicy
+-------
+
+Variable | Description | Required
+-------- | ----------- | --------
+`ipaadmin_principal` | The admin principal is a string and defaults to `admin` | no
+`ipaadmin_password` | The admin password is a string and is required if there is no admin ticket available on the node | no
+`name` \| `cn` | The list of pwpolicy name strings. | no
+`maxlife` \| `krbmaxpwdlife` | Maximum password lifetime in days. (int) | no
+`minlife` \| `krbminpwdlife` | Minimum password lifetime in hours. (int) | no
+`history` \| `krbpwdhistorylength` | Password history size. (int) | no
+`minclasses` \| `krbpwdmindiffchars` | Minimum number of character classes. (int) | no
+`minlength` \| `krbpwdminlength` | Minimum length of password. (int) | no
+`priority` \| `cospriority` | Priority of the policy, higher number means lower priority. (int) | no
+`maxfail` \| `krbpwdmaxfailure` | Consecutive failures before lockout. (int) | no
+`failinterval` \| `krbpwdfailurecountinterval` | Period after which failure count will be reset in seconds. (int) | no
+`lockouttime` \| `krbpwdlockoutduration` | Period for which lockout is enforced in seconds. (int) | no
+`state` | The state to ensure. It can be one of `present` or `absent`, default: `present`. | yes
+
+
+Authors
+=======
+
+Thomas Woerner