Clean up some bashisms from /bin/sh scripts

modules.d/40network/dhclient-script.sh

@@ -95,7 +95,7 @@ setup_interface6() {
     [ -n "$hostname" ] && echo "echo ${hostname%.$domain}${domain:+.$domain} > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
 }
 
-function parse_option_121() {
+parse_option_121() {
     while [ $# -ne 0 ]; do
         mask="$1"
         shift

modules.d/40network/ifup.sh

@@ -277,7 +277,7 @@ if [ -z "$NO_TEAM_MASTER" ]; then
                 for slave in $teamslaves ; do
                     ip link set $slave up 2>/dev/null
                     if wait_for_if_up $slave; then
-                        working_slaves+="$slave "
+                        working_slaves="$working_slaves$slave "
                     fi
                 done
                 # Do not add slaves now

modules.d/95fcoe/fcoe-edd.sh

@@ -29,7 +29,7 @@ for disk in /sys/firmware/edd/int13_*; do
 	    driver=${driver##*/}
     fi
     # i40e uses dev_port 1 for a virtual fcoe function
-    if [ "${driver}" == "i40e" ]; then
+    if [ "${driver}" = "i40e" ]; then
 	    dev_port=1
     fi
     for nic in "${disk}"/pci_dev/net/*; do

modules.d/95nfs/nfs-lib.sh

@@ -110,7 +110,7 @@ nfsroot_from_dhcp() {
         [ -f $f ] && . $f
     done
     [ -n "$new_root_path" ] && nfsroot_to_var "$nfs:$new_root_path"
-    [ -z "$path" ] && [ "$(getarg root=)" == "/dev/nfs" ] && path=/tftpboot/%s
+    [ -z "$path" ] && [ "$(getarg root=)" = "/dev/nfs" ] && path=/tftpboot/%s
     [ -z "$server" ] && server=$srv
     [ -z "$server" ] && server=$new_dhcp_server_identifier
     [ -z "$server" ] && server=$new_next_server