COMAC-8 add ability to disable sriov for mcord-services

Add option to enable/disable sriov. PTP plugin can be used in case
sriov is disabled. Basically all kind of plugin can be used,
but may need some manual steps.
Also, refactor spgwu to make it more configurable and conventional.

Change-Id: I62d5d41cbd27b53b9c66dfad55123ba7bc340482
diff --git a/mcord-release/mcord-services/templates/bin/_spgwu-setup-af-iface.sh.tpl b/mcord-release/mcord-services/templates/bin/_spgwu-setup-af-iface.sh.tpl
new file mode 100644
index 0000000..3266da8
--- /dev/null
+++ b/mcord-release/mcord-services/templates/bin/_spgwu-setup-af-iface.sh.tpl
@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# Copyright 2019-present Open Networking Foundation
+# Copyright 2019 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+UL_IFACE="{{- .Values.spgwu.conf.dp.s1u_af_dev -}}"
+DL_IFACE="{{- .Values.spgwu.conf.dp.sgi_af_dev -}}"
+
+if ! ip link show $UL_IFACE; then
+    s1u_mac=$(ip addr show dev s1u-net | awk '$1=="link/ether"{print $2}')
+    ip link add $UL_IFACE type veth peer name l_$UL_IFACE
+    ip link set $UL_IFACE up
+    ip link set l_$UL_IFACE up
+    ip link set dev $UL_IFACE address $s1u_mac
+fi
+if ! ip link show $DL_IFACE; then
+    sgi_mac=$(ip addr show dev sgi-net | awk '$1=="link/ether"{print $2}')
+    ip link add $DL_IFACE type veth peer name l_$DL_IFACE
+    ip link set $DL_IFACE up
+    ip link set l_$DL_IFACE up
+    ip link set dev $DL_IFACE address $sgi_mac
+fi
+
+if ! ip addr show $UL_IFACE | grep inet; then
+    s1u_ip=$(ip addr show s1u-net | grep inet | grep -v inet6 | awk '{print $2}')
+    ip addr add $s1u_ip dev $UL_IFACE
+fi
+if ! ip addr show $DL_IFACE | grep inet; then
+    sgi_ip=$(ip addr show sgi-net | grep inet | grep -v inet6 | awk '{print $2}')
+    ip addr add $sgi_ip dev $DL_IFACE
+fi
+
+ip a