Add integration tests for nxos_facts, nxos_bgp, nxos_bgp_af, nxos_bgp_neighbor, and nxos_evpn_global (#26924)

* Add new ITs for nxos_bgp, nxos_bgp_af, nxos_bgp_neighbor, and nxos_evpn_global

* Add nxos_facts IT and enhance existing tests

* switch nxos_feature tests to use bgp

* misc. test fixes

* Add checks for titanium in IT

* Handle non-titanium case in tests

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

@@ -1,13 +1,31 @@
 ---
-# NXAPI is enabled differently on NX-OS platforms.
-# Try both commands to enable NXAPI and ignore any errors.
-- name: enable nxapi on remote device
-  nxos_feature:
-    feature: nxapi
-    state: enabled
+# There is a bug currently where the nxapi server can get
+# stuck in a bad state when enabling/disabling rapidly by
+# the integration tests.
+#
+# Toggle the command off/on as mitigation.
+- name: Toggle feature nxapi - Disable
+  nxos_config:
+    lines:
+      - no feature nxapi
     provider: "{{ cli }}"
   ignore_errors: yes
 
+# Pause after disabling nxapi
+- pause:
+    seconds: 3
+
+- name: Toggle feature nxapi - Enable
+  nxos_config:
+    lines:
+      - feature nxapi
+    provider: "{{ cli }}"
+  ignore_errors: yes
+
+# Pause after enabling nxapi
+- pause:
+    seconds: 3
+
 # Gather the list of interfaces on this device and make the list
 # available for integration tests that need them.
 #
@@ -52,3 +70,7 @@
 # Set platform to N9K-F for fretta
 - set_fact: platform="N9K-F"
   when: (platform | match("N9K")) and (fretta | search("true"))
+
+# Check if platform is titanium
+- set_fact: titanium={% for row in nxos_inventory_output.stdout_lines[0]['TABLE_inv']['ROW_inv'] if 'NX-OSv' in row['desc']%}"true"{% endfor %}
+  when: platform | match("N7K")