New automount map management module.

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

    plugins/modules/ipaautomountmap.py

The server module allows to ensure presence and absence of automount
maps. The module requires an existing automount location to place the
map within. It does not create any automount keys with in the map.

Here is the documentation for the module:

    README-automountmap.md

New example playbooks have been added:

    playbooks/automount/automount-map-absent.yaml
    playbooks/automount/automount-map-present.yaml

New tests for the module:

    tests/automount/test_automountmap.yml

README-automountmap.md

@@ -0,0 +1,95 @@
+Automountmap module
+=====================
+
+Description
+-----------
+
+The automountmap module allows the addition and removal of maps within automount locations. 
+
+It is desgined to follow the IPA api as closely as possible while ensuring ease of use.
+
+
+Features
+--------
+* Automount map management
+
+Supported FreeIPA Versions
+--------------------------
+
+FreeIPA versions 4.4.0 and up are supported by the ipaautomountmap 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 an automount map:
+
+```yaml
+---
+- name: Playbook to add an automount map
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  - name: ensure map named auto.DMZ in location DMZ is created
+    ipaautomountmap:
+      ipaadmin_password: SomeADMINpassword
+      name: auto.DMZ
+      location: DMZ
+      desc: "this is a map for servers in the DMZ"
+```
+
+
+Example playbook to ensure auto.DMZi does not exist
+```yaml
+---
+- name: Playbook to remove an automount map
+  hosts: ipaserver
+  become: true
+
+  tasks:
+  - name: ensure map auto.DMZ has been removed
+    ipaautomountmap:
+      ipaadmin_password: SomeADMINpassword
+      name: auto.DMZ
+      location: DMX
+      state: absent
+```
+
+
+Variables
+=========
+
+ipaautomountmap
+-------
+
+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` \| `mapname` \| `map` \| `automountmapname` | Name of the map to manage | yes
+`location` \| `automountlocation` \| `automountlocationcn` | Location name. | yes
+`desc` \| `description` | Description of the map | yes
+`state` | The state to ensure. It can be one of `present`, or `absent`, default: `present`. | no
+
+
+Authors
+=======
+
+Chris Procter