Azure load balancer support (ansible#26099)

* (wip) add partial loadbalancer module

* (wip) add ability to use a public ip for a load balancer

* fix shebang

* add backend address pool to load balancer

* remove unncessary error variable

* add probe support to load balancer

* add ability to add load distribution rule to load balancer

* add nat pool functionality to azure load balancer

* fix pep8 errors from sanity check

* add documentation for load balancer

* refactor imports

* fix license header copyright

* add facts module for azure load balancer

* fix ansible-test failures

* add integration tests for load balancer

* fix metadata version

* add complex integration test to azure_rm_loadbalancer

.gitignore

@@ -64,6 +64,7 @@ Vagrantfile
 .vagrant
 ansible.egg-info/
 /shippable/
+/test/integration/cloud-config-azure.yml
 # Release directory
 packaging/release/ansible_release
 /.cache/