executors: use set -e consistently

executor-scripts/linux/bridge

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 # Copyright (C) 2012, 2020 Natanael Copa <ncopa@alpinelinux.org>
 # Copyright (C) 2020 Ariadne Conill <ariadne@dereferenced.org>
 #

executor-scripts/linux/gre

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 # Executor for advanced GRE tunnel management.
 
 [ -z "$IF_GRE_LOCAL" ] && exit 1

executor-scripts/linux/ipv6-ra

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 start() {
 	${MOCK} /bin/sh -c "echo 1 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra"
 }

executor-scripts/linux/link

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 [ -n "$VERBOSE" ] && set -x
 
 IF_LINK_OPTIONS="$IF_LINK_OPTIONS"

executor-scripts/linux/static

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 [ -z "$IF_METRIC" ] && IF_METRIC="1"
 [ -n "$IF_VRF_TABLE" ] && VRF_TABLE="table $IF_VRF_TABLE"
 [ -n "$IF_METRIC" ] && METRIC="metric $IF_METRIC"

executor-scripts/linux/tunnel

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 # Based on alpine's tunnel configuration script.
 # Copyright (c) 2017 Kaarle Ritvanen
 # Copyright (c) 2020 Ariadne Conill (extended for ifupdown-ng)

executor-scripts/stub/bond

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 [ -z "$IF_BOND_MEMBERS" ] && IF_BOND_MEMBERS="$IF_BOND_SLAVES"
 case "$PHASE" in
 depend)	echo "$IF_BOND_MEMBERS" ;;

executor-scripts/stub/bridge

@@ -1,4 +1,5 @@
 #!/bin/sh
+set -e
 case "$PHASE" in
 depend)
 	if [ "$IF_BRIDGE_PORTS" != "none" ]; then