Revert "PROVISORY: ci: wnc-freedom: remove test for ethernet aliases"

This reverts commit bd630d500c to restore
the tests for ethernet aliases as the feature was added back.

References: PCF-1964
Signed-off-by: Petr Štetiar <petr.stetiar@prplfoundation.org>

.gitlab/tests/cram/wnc-freedom/015-platform.t

@@ -29,6 +29,36 @@ Check that Quectel RM520N-GL is available on USB bus:
     iManufacturer           1 Quectel
     iProduct                2 RM520N-GL
 
+Check that expected DTS aliases are provided for ethernet interfaces:
+
+  $ R 'cd /sys/firmware/devicetree/base
+  > for eth_label in $(find -name label); do
+  >   if [ "$(cat ${eth_label/label/device_type} 2>/dev/null)" != "network" ]; then
+  >     continue
+  >   fi
+  >   eth_device="${eth_label/\/label/}"
+  >   eth_intf="$(cat ${eth_label})"
+  >   eth_aliases="$(cd aliases; grep -l "${eth_device/\./}" $(ls * | grep -Ev -e 'label-mac-device' -e '^ethernet[0-9]+$' | grep -E '^[-0-9a-z]+$'))"
+  >   for eth_alias in $eth_aliases; do
+  >      echo "intf=${eth_intf} => alias=${eth_alias}"
+  >      break;
+  >   done
+  > done | LC_ALL=C sort'
+  intf=lan1 => alias=lan1
+  intf=lan2 => alias=lan2
+  intf=lan3 => alias=lan3
+  intf=lan4 => alias=lan4
+  intf=wan => alias=wan
+
+Check that ethernet-manager configuration contains expected CPE aliases based on DTS aliases:
+
+  $ R "ba-cli -j -l Ethernet.Interface.*.Alias?" | jq -r '.[0] | to_entries[] | .value.Alias' | LC_ALL=C sort
+  cpe-lan1
+  cpe-lan2
+  cpe-lan3
+  cpe-lan4
+  cpe-wan
+
 Check that we've WPS gpio key available:
 
   $ R "cat /sys/firmware/devicetree/base/soc@0/gpio_keys/button@1/label"