fix(fcoe): remove needless bash dependency

modules.d/95fcoe/lldpad.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 if ! getargbool 1 rd.fcoe -d -n rd.nofcoe; then
     info "rd.fcoe=0: skipping lldpad activation"

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

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 for f in /sys/bus/fcoe/devices/ctlr_*; do
     [ -e "$f" ] || continue