asa_config/ios_config: diff strict does not work with multiple parents (#45150)

* multiple parents issues in diff

* Integration tests for missing functionality

* add testcase for other platforms. vnxos does not support qos so need to find a command chain on v-nxos for multiple parets. junos uses on-device diff so should not need this.

* Fix for issue when any candidate parent did not meet the exact line in running-config

* DCI runs eos_config without become flag

test/integration/targets/iosxr_config/tests/cli/sublevel_strict_mul_parents.yaml

@@ -0,0 +1,67 @@
+---
+- debug: msg="START cli/sublevel_strict_mul_parents.yaml on connection={{ ansible_connection }}"
+
+- name: setup
+  iosxr_config:
+    lines:
+      - class-map match-any c1
+      - match precedence 7
+      - policy-map p1
+      - class c1
+      - set precedence 2
+    before: ['no policy-map p1', 'no class-map match-any c1']
+    match: none
+
+- name: configure sub level command using strict match
+  iosxr_config:
+    lines:
+      - set precedence 5
+      - police rate percent 10
+    parents: ['policy-map p1', 'class c1']
+    match: strict
+  register: result
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'set precedence 5' in result.commands"
+      - "'police rate percent 10' in result.commands"
+
+- name: change sub level command order and config with strict match
+  iosxr_config:
+    lines:
+      - police rate percent 10
+      - set precedence 5
+    parents: ['policy-map p1', 'class c1']
+    match: strict
+  register: result
+
+- assert:
+    that:
+      - "result.changed == true"
+      - "'set precedence 5' in result.commands"
+      - "'police rate percent 10' in result.commands"
+
+- name: Config sub level command with strict match (Idempotency)
+  iosxr_config:
+    lines:
+#IOSxr does not change order of class action if reconfigured
+#so we have to use old order for Idempotency
+      - set precedence 5
+      - police rate percent 10
+    parents: ['policy-map p1', 'class c1']
+    match: strict
+  register: result
+
+- assert:
+    that:
+      - "result.changed == false"
+
+- name: teardown
+  iosxr_config:
+    lines:
+      - no policy-map p1
+      - no class-map match-any c1
+    match: none
+
+- debug: msg="END cli/sublevel_strict_mul_parents.yaml on connection={{ ansible_connection }}"