- Adds iosxr_netconf module to configure netconf service on IOSXR (#31715)

* - Adds iosxr_netconf module to configure netcong service on Cisco
  IOS-XR devices

* - Adds Integration test for module
- Handles diff return from load_config

* - Adds unit test for iosxr_netconf module

test/integration/targets/iosxr_netconf/defaults/main.yaml

@@ -0,0 +1,3 @@
+---
+testcase: "*"
+test_items: []

test/integration/targets/iosxr_netconf/meta/main.yaml

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

test/integration/targets/iosxr_netconf/tasks/cli.yaml

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+---
+- name: collect all cli test cases
+  find:
+    paths: "{{ role_path }}/tests/cli"
+    patterns: "{{ testcase }}.yaml"
+  register: test_cases
+  delegate_to: localhost
+
+- name: set test_items
+  set_fact: test_items="{{ test_cases.files | map(attribute='path') | list }}"
+
+- name: run test case
+  include: "{{ test_case_to_run }}"
+  with_items: "{{ test_items }}"
+  loop_control:
+    loop_var: test_case_to_run

test/integration/targets/iosxr_netconf/tasks/main.yaml

@@ -0,0 +1,2 @@
+---
+- { include: cli.yaml, tags: ['cli'] }

test/integration/targets/iosxr_netconf/tests/cli/basic.yaml

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+---
+- debug: msg="START iosxr_netconf cli/basic.yaml"
+
+- name: Disable NetConf service
+  iosxr_netconf: &disable_netconf
+    state: absent
+
+- block:
+  - name: Enable Netconf service
+    iosxr_netconf:
+      netconf_port: 830
+      netconf_vrf: 'default'
+      state: present
+    register: result
+
+  - assert: &true
+      that:
+        - 'result.changed == true'
+
+  - name: Check idempotence of Enable Netconf service
+    iosxr_netconf:
+      netconf_port: 830
+      netconf_vrf: 'default'
+      state: present
+    register: result
+
+  - assert: &false
+      that:
+        - 'result.changed == false'
+
+  - name: Change Netconf port 
+    iosxr_netconf:
+      netconf_port: 9000
+      state: present
+    register: result
+
+  - assert: *true
+
+  - name: Check idempotent of change Netconf port
+    iosxr_netconf:
+      netconf_port: 9000
+      state: present
+    register: result
+      
+  - assert: *false
+
+  - name: Add Netconf vrf
+    iosxr_netconf:
+      netconf_port: 9000
+      netconf_vrf: 'new_default'
+      state: present
+    register: result
+
+  - assert: *true
+
+  - name: Check idempotent of add Netconf vrf
+    iosxr_netconf:
+      netconf_port: 9000
+      netconf_vrf: 'new_default'
+      state: present
+    register: result
+      
+  - assert: *false
+
+  always:
+  - name: Disable Netconf service
+    iosxr_netconf: *disable_netconf
+
+- debug: msg="END iosxr_netconf cli/basic.yaml"