LP#1798187 - Support CRLF and LF format for item status import files

LP#1798187 - Support CRLF and LF format for item status import files

Testing Plan:

Before patch, try to import a file in CRLF end of line format that includes
leading and trailing spaces, empty lines, lines of just spaces or
barcodes with spaces.  The import will fail to load those items and will
stop processing when it hits certain situations.

After patch, try to import a file in CRLF EOL format that includes barcodes
with trailing spaces, leading spaces, barcodes with spaces, and/or
empty lines.  The import will load all barcodes.

Signed-off-by: Josh Stompro <stompro@stompro.org>