Add junos integration test (#24404)

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

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+---
+testcase: "*"
+test_items: []

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

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+---
+- { include: netconf.yaml, tags: ['netconf'] }

test/integration/targets/junos_rpc/tasks/netconf.yaml

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+- name: collect netconf test cases
+  find:
+    paths: "{{ role_path }}/tests/netconf"
+    patterns: "{{ testcase }}.yaml"
+  register: test_cases
+
+- 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/junos_rpc/tests/netconf/rpc.yaml

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+---
+- debug: msg="START netconf/rpc.yaml"
+
+- name: Execute RPC on device
+  junos_rpc:
+    rpc: get-interface-information
+    provider: "{{ netconf }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "'<name>\nem0\n</name>' in result['xml']"
+      - "result.output is defined"
+
+- name: Execute RPC with args on device
+  junos_rpc:
+    rpc: get-interface-information
+    args:
+      interface-name: em0
+      media: True
+    provider: "{{ netconf }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "'<name>\nem0\n</name>' in result['xml']"
+      - "'<name>\nlo0\n</name>' not in result['xml']"
+
+- name: Execute RPC on device and get output in text format
+  junos_rpc:
+    rpc: get-interface-information
+    output: text
+    provider: "{{ netconf }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "result.output is defined"
+      - "result.output_lines is defined"
+      - "'Physical interface: em0' in result['output']"
+
+- name: Execute RPC on device and get output in json format
+  junos_rpc:
+    rpc: get-interface-information
+    output: json
+    args:
+      interface-name: em0
+      media: True
+    provider: "{{ netconf }}"
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+      - "result.output is defined"
+      - "result['output']['interface-information'][0]['physical-interface'][0]['name'][0]['data'] == \"em0\""
+
+- name: Execute invalid RPC
+  junos_rpc:
+    rpc: show-interface-information
+    provider: "{{ netconf }}"
+  register: result
+  ignore_errors: yes
+
+- assert:
+    that:
+      - "result.failed == true"
+
+- debug: msg="END netconf/rpc.yaml"