New module for azure virtual network gateway (#44411)

* module for azure vpn gateway

* updating vng

test/integration/targets/azure_rm_virtualnetworkgateway/aliases

@@ -0,0 +1,3 @@
+cloud/azure
+shippable/azure/group2
+destructive

test/integration/targets/azure_rm_virtualnetworkgateway/meta/main.yml

@@ -0,0 +1,2 @@
+dependencies:
+  - setup_azure

test/integration/targets/azure_rm_virtualnetworkgateway/tasks/main.yml

@@ -0,0 +1,88 @@
+- name: Prepare random number
+  set_fact:
+    vnetname: "vnet{{ resource_group | hash('md5') | truncate(7, True, '') }}{{ 1000 | random }}"
+    vngname: "vng{{ resource_group | hash('md5') | truncate(7, True, '') }}{{ 1000 | random }}"
+
+- name: Create virtual network
+  azure_rm_virtualnetwork:
+      resource_group: "{{ resource_group }}"
+      name: "{{ vnetname }}"
+      address_prefixes: "10.0.0.0/16"
+
+- name: Add subnet
+  azure_rm_subnet:
+      resource_group: "{{ resource_group }}"
+      name: GatewaySubnet
+      address_prefix: "10.0.2.0/24"
+      virtual_network: "{{ vnetname }}"
+
+- name: Create public IP address
+  azure_rm_publicipaddress:
+      resource_group: "{{ resource_group }}"
+      allocation_method: Dynamic
+      name: testPublicIP
+
+- name: Create virtual network gateway without bgp settings
+  azure_rm_virtualnetworkgateway:
+    resource_group: "{{ resource_group }}"
+    name: "{{ vngname }}"
+    ip_configurations:
+      - name: testipconfig
+        private_ip_allocation_method: Dynamic
+        public_ip_address_name: testPublicIP
+    virtual_network: "{{ vnetname }}"
+    tags:
+      common: "xyz"
+  register: output
+
+- assert:
+    that: output.changed
+
+- name: Create virtual network gateway without bgp settings - idempotent
+  azure_rm_virtualnetworkgateway:
+    resource_group: "{{ resource_group }}"
+    name: "{{ vngname }}"
+    ip_configurations:
+      - name: testipconfig
+        private_ip_allocation_method: Dynamic
+        public_ip_address_name: testPublicIP
+    virtual_network: "{{ vnetname }}"
+    tags:
+      common: "xyz"
+  register: output
+
+- assert:
+    that: not output.changed
+
+- name: Update virtual network gateway
+  azure_rm_virtualnetworkgateway:
+    resource_group: "{{ resource_group }}"
+    name: "{{ vngname }}"
+    ip_configurations:
+      - name: testipconfig
+        private_ip_allocation_method: Dynamic
+        public_ip_address_name: testPublicIP
+    virtual_network: "{{ vnetname }}"
+    tags:
+      common: "mno"
+  register: output
+- assert:
+    that: output.changed
+
+- name: Delete virtual network gateway
+  azure_rm_virtualnetworkgateway:
+    resource_group: "{{ resource_group }}"
+    name: "{{ vngname }}"
+    state: absent
+  register: output
+- assert:
+    that: output.changed
+
+- name: Delete virtual network gateway - idempotent
+  azure_rm_virtualnetworkgateway:
+    resource_group: "{{ resource_group }}"
+    name: "{{ vngname }}"
+    state: absent
+  register: output
+- assert:
+    that: not output.changed