nxos_bgp_neighbor_af:sanity:6k: skip soft-reconfig 'always' test (#55661)

N5K / N6K do not support the `always` keyword on the `soft-reconfig in` configuration.

(cherry picked from commit 4798368b13)

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

@@ -4,7 +4,7 @@
   when: ansible_connection == "local"
 
 - set_fact: soft_reconfiguration_ina="always"
-  when: imagetag and (imagetag is version_compare('D1', 'ne'))
+  when: imagetag is not search("D1|N1")
 
 - name: "Disable feature BGP"
   nxos_feature: &disable_bgp