frr: New module for BGP configuration management (#51281)

* Added frr_bgp module

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix pycodestyle warnings

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix CI docs issues

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Initial test files

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix dir structure to make CI happy

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix imports

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix CI

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix CI

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Split neighbor spec to handle general session and af session

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* New set of unittests

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix CI

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix CI - 2

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Update license

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Add port option for neighbor

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Validate network input

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Validate network input

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix sanity test failure

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Add validation for AF and more examples

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

test/units/modules/network/frr/frr_module.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
-
 # (c) 2019, Ansible by Red Hat, inc
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+#
 
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type