Added bf_drivers.log to zipped dump after execution of "show techsupport" (#2164)

What I did
I add all bf_drivers*.log files into log folder of zipped filed created after perform the "show techsupport"

How I did it
I gather all bf_drivers*.log files and make copy from syncd container into /var/log folder

How to verify it
I verified it on device with performing of "show techsupport"

Author: VadymYashchenko

scripts/generate_dump

@@ -1058,6 +1058,31 @@ collect_broadcom() {
     copy_from_masic_docker "syncd" "/var/log/bcm_diag_post" "/var/log/bcm_diag_post"
 }
 
+###############################################################################
+# Collect Barefoot specific information
+# Globals:
+#  None
+# Arguments:
+#  None
+# Returns:
+#  None
+###############################################################################
+collect_barefoot() {
+    local bf_logs="/tmp/bf_logs"
+    $( rm -rf ${bf_logs} )
+    $( mkdir  ${bf_logs} )
+    unset array
+    array=( $(docker exec -ti syncd ls -1 | grep bf_drivers.log) )
+    for y in "${array[@]}"; do
+        itstr=`echo ${y} | tr -d "\r\n"`
+        copy_from_masic_docker "syncd" "/${itstr}" "${bf_logs}"
+    done
+
+    for file in $(find /tmp/bf_logs -type f); do
+        save_file "${file}" log true true
+    done
+} 
+
 ###############################################################################
 # Save log file
 # Globals:
@@ -1371,6 +1396,10 @@ main() {
 
     save_saidump
 
+    if [ "$asic" = "barefoot" ]; then
+        collect_barefoot
+    fi
+
     if [[ "$asic" = "mellanox" ]]; then
         collect_mellanox
     fi