report-error: Replace the build directory path in the error text

Replace the TOPDIR in the output error file so that the error report once
submitted can then be more easily matched to find duplicate error
reports. This also reduces the need to manually redact any information that
might be in the error log path such as hostnames or home directories.

(From OE-Core rev: ffdc9550c109facf3a3ebdf90c1ba8153cac90dd)

Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/report-error.bbclass

@@ -58,6 +58,11 @@ python errorreport_handler () {
                 try:
                     logFile = codecs.open(log, 'r', 'utf-8')
                     logdata = logFile.read()
+
+                    topdir = e.data.getVar('TOPDIR', True)
+                    if topdir:
+                        logdata = logdata.replace(topdir, ' ')
+
                     logFile.close()
                 except:
                     logdata = "Unable to read log file"