fix ipsec_polices is NoneType (Azure#3785)

Author: 00Kai0

src/virtual-wan/HISTORY.rst

@@ -3,6 +3,10 @@
 Release History
 ===============
 
+0.2.8
+++++++
+* bugfix: `az network vpn-gateway connection ipsec-policy add ` ipsec_policies is NoneType.
+
 0.2.7
 ++++++
 * bugfix: `az network vhub get-effective-routes` always returns empty value list.

src/virtual-wan/azext_vwan/custom.py

@@ -588,6 +588,9 @@ def add_vpn_gateway_connection_ipsec_policy(cmd, resource_group_name, gateway_na
     client = network_client_factory(cmd.cli_ctx).vpn_gateways
     gateway = client.get(resource_group_name, gateway_name)
     conn = _find_item_at_path(gateway, 'connections.{}'.format(connection_name))
+
+    if conn.ipsec_policies is None:
+        conn.ipsec_policies = []
     conn.ipsec_policies.append(
         IpsecPolicy(
             sa_life_time_seconds=sa_life_time_seconds,
@@ -600,6 +603,7 @@ def add_vpn_gateway_connection_ipsec_policy(cmd, resource_group_name, gateway_na
             pfs_group=pfs_group
         )
     )
+
     _upsert(gateway, 'connections', conn, 'name', warn=False)
     poller = sdk_no_wait(no_wait, client.create_or_update,
                          resource_group_name, gateway_name, gateway)

src/virtual-wan/setup.py

@@ -8,7 +8,7 @@
 from codecs import open
 from setuptools import setup, find_packages
 
-VERSION = "0.2.7"
+VERSION = "0.2.8"
 
 CLASSIFIERS = [
     'Development Status :: 4 - Beta',