meta-facebook: add iproute2

Align usage with fb-openbmc.
It supports the '-color=auto' option, and also fixes the issue
where the 'ip' command doesn't work normally due to being aliased
as 'ip -color=auto' in the released image.

Change-Id: Ib242ace4aebf47e4ac6338b5ede12b7e9998bb28
Signed-off-by: Cosmo Chou <cosmo.chou@quantatw.com>
diff --git a/meta-facebook/recipes-phosphor/images/fb-phosphor-image.inc b/meta-facebook/recipes-phosphor/images/fb-phosphor-image.inc
index 375e36a..013b846 100644
--- a/meta-facebook/recipes-phosphor/images/fb-phosphor-image.inc
+++ b/meta-facebook/recipes-phosphor/images/fb-phosphor-image.inc
@@ -16,6 +16,7 @@
         '', d)} \
     curl \
     dbus-top \
+    iproute2 \
     jq \
     strace \
     tcpdump \