feat(centos) migrate "Installation on Centos 7 and OpenLDAP

Signed-off-by: Benoit Mortier <benoit.mortier@opensides.be>

source/install/centos/centos-fd-install.rst

+Installing Dependencies
+'''''''''''''''''''''''
+
+FusionDirectory requires both the `EPEL`_ repository and
+the Software Collection `SCL`_ for php 5.6 or higher.
+
+-  To install epel
+
+.. code-block:: shell
+
+   yum install epel-release
+   
+-  To install php 5.6 Software Collection
+
+.. code-block:: shell
+
+   yum install centos-release-scl
+
+   yum install rh-php56
+
+- To enable php 5.6
+
+.. code-block:: shell
+
+   scl enable rh-php56 bash
+
+Install the FusionDirectory Repos
+'''''''''''''''''''''''''''''''''
+
+To easily install the latest version, you can install the fusion
+directory repos
+
+Chose the repositories that goes with your centos version
+
+:ref:`rpm-repository-centos6-label`
+
+:ref:`rpm-repository-centos7-label`
+
+Create 2 new repo file your favorite text editor.
+
+- One for fusiondirectory
+- One for fusiondirectory-extra
+
+Install FusionDirectory
+'''''''''''''''''''''''
+
+You can then install FusionDirectory by running: 
+
+.. code-block:: shell
+
+   yum install -y fusiondirectory
+   yum install -y fusiondirectory-selinux fusiondirectory-schema schema2ldif
+
+.. warning::   
+
+   If you use SELinux (same in permissive), you must install fusiondirectory-selinux !
+
+FusionDirectory Schema Setup
+''''''''''''''''''''''''''''
+
+Now that we have FusionDirectory installed, we need to install the
+FusionDirectory schemas into our LDAP database.
+
+We can easily do this by running:
+
+.. code-block:: shell
+
+   fusiondirectory-insert-schema -i /etc/openldap/schema/cosine.schema
+   fusiondirectory-insert-schema -i /etc/openldap/schema/inetorgperson.schema
+   fusiondirectory-insert-schema -i /etc/openldap/schema/nis.schema
+   fusiondirectory-insert-schema
+
+Now we just need to restart apache:
+
+.. code-block:: shell
+
+   systemctl restart httpd
+
+You should see the FusionDirectory setup page come up by going to:
+
+http://SERVER-IP/fusiondirectory
+
+.. _EPEL : https://fedoraproject.org/wiki/EPEL
+.. _SCL : https://www.softwarecollections.org
+.. _rh-php56 : https://www.softwarecollections.org/en/scls/rhscl/rh-php56
+
+

source/install/centos/index.rst

+Install FusionDirectory on Centos
+=================================
+
+Install FusionDirectory
+
+.. toctree::
+   :maxdepth: 4
+
+   centos-fd-install.rst

source/install/download.rst

@@ -46,6 +46,8 @@ FusionDirectory.
 
 To use the lastest published version put this in your yum config :
 
+.. _rpm-repository-centos6-label:
+
 CentOS 6 / RHEL 6
 ^^^^^^^^^^^^^^^^^
 
@@ -82,6 +84,8 @@ SRPMS are also available in the following repo :
 
 !!! Scientific Linux is deprecated and will not be maintained anymore, you can switch the centos packages !!!
 
+.. _rpm-repository-centos7-label:
+
 CentOS 7 / RHEL 7
 ^^^^^^^^^^^^^^^^^
 

source/install/index.rst

@@ -8,3 +8,4 @@ Install FusionDirectory
 
    gpg-keys.rst
    download.rst
+   centos/index.rst