meta-google: gbmc-ncsi-config: Fix missing include

We use functions from the network-sh library and need to include it.

Change-Id: I7f78b7dd37c4e5d38342c4625c26c4b583133bf5
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/ncsi/files/gbmc-ncsi-br-deprecated-ips.sh.in b/meta-google/recipes-google/ncsi/files/gbmc-ncsi-br-deprecated-ips.sh.in
index da6f27a..796e405 100644
--- a/meta-google/recipes-google/ncsi/files/gbmc-ncsi-br-deprecated-ips.sh.in
+++ b/meta-google/recipes-google/ncsi/files/gbmc-ncsi-br-deprecated-ips.sh.in
@@ -14,6 +14,8 @@
 
 [ -z "${gbmc_ncsi_br_deprecated_ips_lib-}" ] || return
 
+source /usr/share/network/lib.sh || exit
+
 gbmc_ncsi_br_deprecated_ips_init=
 gbmc_ncsi_br_deprecated_ips_confip=
 gbmc_ncsi_br_deprecated_ips_lastip=