Handling of configurations blocks with end-* at the end of the block (#39673)

* handle end-policy issue

* revert changes in iosxr cliconf

* fix trailing parents not included in difference

* Moving fix to platform specific fix

* pep 8 issues

test/integration/targets/iosxr_config/templates/basic/change_prefix_set.j2

@@ -0,0 +1,7 @@
+prefix-set ebpg_filter
+  192.168.0.0/16 ge 15 le 30
+end-set
+
+interface Loopback999
+ description this is a test interface for prefix-set
+

test/integration/targets/iosxr_config/templates/basic/init_prefix_set.j2

@@ -0,0 +1,3 @@
+prefix-set ebpg_filter
+  192.168.0.0/16 ge 17 le 30
+end-set

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

@@ -0,0 +1,27 @@
+---
+- debug: msg="START cli/misplaced_sublevel.yaml on connection={{ ansible_connection }}"
+
+- name: setup
+  iosxr_config:
+    src: basic/init_prefix_set.j2
+  ignore_errors: yes
+
+- name: Change prefix-set and new command after prefix-set
+  iosxr_config:
+    src: basic/change_prefix_set.j2
+  register: result
+
+- assert:
+    that:
+      - "result.changed == true"
+
+- name: Play same config again to verify no diff in prefix-set also works
+  iosxr_config:
+    src: basic/change_prefix_set.j2
+  register: result
+
+- assert:
+    that:
+      - "result.changed == true"
+
+- debug: msg="END cli/misplaced_sublevel.yaml on connection={{ ansible_connection }}"