Added directory for EOS workflow scripts

eos_wfe_scripts/README

+This directory contains scripts to be executed by the EOS workflow engine.
+These scripts should be installed in the foillowing directory on the EOS
+mgm node:
+
+    /var/eos/wfe/bash/
+
+For example the following script is executed when a tape server triggers
+an archived.default workflow event:
+
+    /var/eos/wfe/bash/create_tape_drop_disk_replicas

eos_wfe_scripts/create_tape_drop_disk_replicas

+#!/bin/bash
+if test $# -ne 3; then
+  echo "Wrong number of command-line arguments"
+  echo "Usage: create_tape_drop_disk_replicas wf_tag file_path tape_fs_id"
+  exit -1
+fi
+
+WF_TAG="$1"
+FILE_PATH="$2"
+TAPE_FS_ID="$3"
+
+LOG_FILE="/var/log/eos/wfe/${WF_TAG}.log"
+
+echo `date +%s` `date`" $0 Creating tape replica with fsid ${TAPE_FS_ID} for ${FILE_PATH}" >> ${LOG_FILE}
+if ! eos -r 0 0 file tag "${FILE_PATH}" +${TAPE_FS_ID}; then
+  echo `date +%s` `date`" Failed to create tape replica with fsid ${TAPE_FS_ID} for ${FILE_PATH}" >> ${LOG_FILE}
+  exit 1
+fi
+
+for DISK_FSID in `eos file info "${FILE_PATH}" -m | sed s/\ /'\n'/g | grep fsid | sed s/fsid=// | grep -v ${TAPE_FS_ID}`; do
+  echo `date +%s` `date`" $0 Deleting disk replica with fsid ${DISK_FSID} for ${FILE_PATH}" >> ${LOG_FILE}
+  if ! eos -r 0 0 file drop "${FILE_PATH}" ${DISK_FSID}; then
+    echo `date +%s` `date`" $0 Failed to delete disk replica with fsid ${DISK_FSID} for ${FILE_PATH}" >> ${LOG_FILE}
+    exit 1
+  fi
+done