We are planning to use ActiveDirectory for both Identify and Authentication providers.

Do I need to install all the below packages and also do I need to install any other tools...

These packages are available for RHEL 6.4 version you are having currently.

python-sssdconfig-1.13.3-22.el6.noarch
sssd-1.13.3-22.el6.x86_64
sssd-ad-1.13.3-22.el6.x86_64
sssd-client-1.13.3-22.el6.x86_64
sssd-common-1.13.3-22.el6.x86_64
sssd-common-pac-1.13.3-22.el6.x86_64
sssd-dbus-1.13.3-22.el6.x86_64
sssd-ipa-1.13.3-22.el6.x86_64
sssd-krb5-1.13.3-22.el6.x86_64
sssd-krb5-common-1.13.3-22.el6.x86_64
sssd-ldap-1.13.3-22.el6.x86_64
sssd-proxy-1.13.3-22.el6.x86_64

Along with that do we need to install below..
"sssd-tools"
"authconfig"

In the sssd.conf file if we are going to use AD, should we update as below.....
sssd.conf:
= "id_provider = ad"
= "ad_server = ad.example.com, ad1.example.com" --> We can give the list of the domaincontrollers with comma seperater for primary
= "srv" service discory is supported for only primary servers as we are not planning for back-up.

Could you please provide me on the configuration procedure/steps specific to AD for both Identify/Authentication Providers?

Thanks!