Add UCS DNS Server management module (#46789)

* Add module for UCS DNS Server

test/integration/targets/ucs_dns_server/aliases

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+# Not enabled, but can be used with the UCS Platform Emulator or UCS hardware.
+# Example integration_config.yml:
+# ---
+# ucs_hostname: 10.10.10.10
+# ucs_username: admin
+# ucs_password: password
+unsupported

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

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+# Test code for the UCS modules
+# Copyright 2018, John McDonough (@movinalot)
+
+- name: Test that we have a UCS host, UCS username, and UCS password.
+  fail:
+    msg: 'Please define the following variables: ucs_hostname, ucs_username and ucs_password.'
+  when: ucs_hostname is not defined or ucs_username is not defined or ucs_password is not defined
+  vars:
+    login_info: &login_info
+      hostname: "{{ ucs_hostname }}"
+      username: "{{ ucs_username }}"
+      password: "{{ ucs_password }}"
+
+# Setup (clean environment)
+- name: DNS Server absent
+  ucs_dns_server: &dns_server_absent
+    <<: *login_info
+    dns_server: 10.10.10.10
+    state: absent
+
+# Test present (check_mode)
+- name: DNS Server present (check_mode)
+  ucs_dns_server: &dns_server_present
+    <<: *login_info
+    dns_server: 10.10.10.10
+  check_mode: yes
+  register: cm_dns_server_present
+
+# Present (normal mode)
+- name: DNS Server present (normal mode)
+  ucs_dns_server: *dns_server_present
+  register: nm_dns_server_present
+
+# Test present again (idempotent)
+- name: DNS Server present again (check_mode)
+  ucs_dns_server: *dns_server_present
+  check_mode: yes
+  register: cm_dns_server_present_again
+
+# Present again (normal mode)
+- name: DNS Server present again (normal mode)
+  ucs_dns_server: *dns_server_present
+  register: nm_dns_server_present_again
+
+# Verfiy present
+- name: Verify DNS Server present results
+  assert:
+    that:
+    - cm_dns_server_present.changed == nm_dns_server_present.changed == true
+    - cm_dns_server_present_again.changed == nm_dns_server_present_again.changed == false
+
+# Test change (check_mode)
+- name: DNS DNS Server change (check_mode)
+  ucs_dns_server: &dns_server_change
+    <<: *dns_server_present
+    dns_server: 10.10.10.10
+  check_mode: yes
+  register: cm_dns_dns_server_change
+
+# Change (normal mode)
+- name: DNS DNS Server change (normal mode)
+  ucs_dns_server: *dns_server_change
+  register: nm_dns_dns_server_change
+
+# Test change again (idempotent)
+- name: DNS DNS Server change again (check_mode)
+  ucs_dns_server: *dns_server_change
+  check_mode: yes
+  register: cm_dns_dns_server_change_again
+
+# Change again (normal mode)
+- name: DNS DNS Server change again (normal mode)
+  ucs_dns_server: *dns_server_change
+  register: nm_dns_dns_server_change_again
+
+# Verfiy change
+- name: Verify DNS DNS Server change results
+  assert:
+    that:
+    - cm_dns_dns_server_change.changed == nm_dns_dns_server_change.changed == true
+    - cm_dns_dns_server_change_again.changed == nm_dns_dns_server_change_again.changed == false
+
+# Teardown (clean environment)
+- name: DNS Server absent (check_mode)
+  ucs_dns_server: *dns_server_absent
+  check_mode: yes
+  register: cm_dns_server_absent
+
+# Absent (normal mode)
+- name: DNS Server absent (normal mode)
+  ucs_dns_server: *dns_server_absent
+  register: nm_dns_server_absent
+
+# Test absent again (idempotent)
+- name: DNS Server absent again (check_mode)
+  ucs_dns_server: *dns_server_absent
+  check_mode: yes
+  register: cm_dns_server_absent_again
+
+# Absent again (normal mode)
+- name: DNS Server absent again (normal mode)
+  ucs_dns_server: *dns_server_absent
+  register: nm_dns_server_absent_again
+
+# Verfiy absent
+- name: Verify DNS Server absent results
+  assert:
+    that:
+    - cm_dns_server_absent.changed == nm_dns_server_absent.changed == true
+    - cm_dns_server_absent_again.changed == nm_dns_server_absent_again.changed == false