Add support for Azure 2.0.0 (#27920)

* Adapt azure_rm_resource_group to azure 2.0.0 + azure Cli support

* Fix exceptions in Azure ARM plugins

* update azure_rm_networkinterface documention to reflect required params

* change state param to not required for docs in azure_rm_subnet

* fix import to reflect azure==2.0.0 changes

* add aliases and fix docs for azure_rm_storageblob

* add resource_group_name alias to azure_rm_storageaccount_facts

* fix import bug due to change in azure==2.0.0

* fix args bug and enum modules issue

* update docs to reflect azure==2.0.0

* pin management clients to a specific api_version

* update docs to reflect the new azure-ansible-base python package

* add fallback for older api resource group listing

* rework azure dependencies installation

* refactor path joining to a cross-plat solution

lib/ansible/modules/cloud/azure/azure_rm_resourcegroup.py

@@ -233,9 +233,12 @@ class AzureRMResourceGroup(AzureRMModuleBase):
     def resources_exist(self):
         found = False
         try:
+            response = self.rm_client.resources.list_by_resource_group(self.name)
+        except AttributeError:
             response = self.rm_client.resource_groups.list_resources(self.name)
         except Exception as exc:
             self.fail("Error checking for resource existence in {0} - {1}".format(self.name, str(exc)))
+
         for item in response:
             found = True
             break