nxos_static_route: reconcile_candidate fails to remove 'track' routes (#53806)

* * `reconcile_candidate()`
  * old code searched the ip route configs for a given prefix+nexthop and then tried to remove the route based on prefix+nexthop only; this would fail when a static route was configured with `track` values.
  * new code still looks for prefix+nexthop but uses the route config it finds on the device to remove it; e.g.
    * search for: `ip route 192.168.20.64/24 192.0.2.3`
    * find:       `ip route 192.168.20.64/24 192.0.2.3 track 1 10`
    * remove:  `no ip route 192.168.20.64/24 192.0.2.3 track 1 10`

* logic cleanups:
  * old code did a `show run` for every prefix. This can be a lot of data when there are large configs.
  * new code uses filters to only return the static route configs.
  * The filters now allow a common code path so no need for default vs vrf code paths

* `sanity` test: 100% Pass rate on N9K,N7K,N6K,N3K

- Bugfix Pull Request

`nxos_static_route`

* filter() does not return a list with python3

`filter()` was breaking pytest when it ran with python3, since it returns
an iterable instead of a list with python3.

Found that I didn't really need `filter()` anyway so just removed it

* restore var names /w/want/

test/integration/targets/nxos_static_route/tests/common/sanity.yaml

@@ -22,6 +22,28 @@
 
 - debug: msg="Test Track Feature {{ test_track_feature }}"
 
+- name: Setup and teardown, remove test routes if present
+  nxos_static_route: &setup_teardown
+    aggregate:
+      - { prefix: "192.168.1.164/32", next_hop: "192.0.2.3" }
+      - { prefix: "192.168.20.64/24", next_hop: "192.0.2.3" }
+      - { prefix: "192.168.22.64/24", next_hop: "192.0.2.3" }
+      - { prefix: "192.168.24.64/24", next_hop: "192.0.2.3" }
+    vrf: "{{ item }}"
+    provider: "{{ connection }}"
+    state: absent
+  with_items: "{{ vrfs }}"
+  ignore_errors: yes
+
+- name: Setup noise routes to ensure testing while non-test routes present
+  nxos_static_route:
+    prefix: "192.168.1.164/32"
+    next_hop: "192.0.2.3"
+    vrf: "{{ item }}"
+    provider: "{{ connection }}"
+    state: present
+  with_items: "{{ vrfs }}"
+
 - block:
   - name: create static route
     nxos_static_route: &configure_static
@@ -178,26 +200,9 @@
     ignore_errors: yes
     when: test_track_feature
 
-  - name: remove static route
-    nxos_static_route:
-      prefix: "192.168.20.64/24"
-      next_hop: "192.0.2.3"
-      route_name: testing
-      pref: 100
-      tag: 5500
-      vrf: "{{ item }}"
-      provider: "{{ connection }}"
-      state: absent
+  - name: teardown test routes
+    nxos_static_route: *setup_teardown
     with_items: "{{ vrfs }}"
     ignore_errors: yes
 
-  - name: remove static route aggregate
-    nxos_static_route:
-      aggregate:
-        - { prefix: "192.168.22.64/24", next_hop: "192.0.2.3" }
-        - { prefix: "192.168.24.64/24", next_hop: "192.0.2.3" }
-      provider: "{{ connection }}"
-      state: absent
-    ignore_errors: yes
-
 - debug: msg="END connection={{ ansible_connection }} nxos_static_route sanity test"