Fix snmp bugs on Nexus 3500 platform (#32773)

* Add n35 platform support

* Fix regex bug and add snmp_location it tests

* Enable nxos_snmp_location tests

test/integration/nxos.yaml

@@ -472,6 +472,16 @@
         - set_fact:
             failed_modules: "{{ failed_modules }} + [ 'nxos_snmp_community' ]"
             test_failed: true
+
+    - block:
+      - include_role:
+          name: nxos_snmp_location
+        when: "limit_to in ['*', 'nxos_snmp_location']"
+      rescue:
+        - set_fact:
+            failed_modules: "{{ failed_modules }} + [ 'nxos_snmp_location' ]"
+            test_failed: true
+
 ###########
     - debug: var=failed_modules
       when: test_failed