Replace CRLF by LF in color table, test, license (#2147)

* Replace CRLF by LF in nlcd color table file. (All other have LF.)
* Replace CRLF by LF and remove form feed (FF) char and FF 'materialized' as chars ^L from external ccmath library license file.
* Replace CRLF by LF and remove trailing whitespace from v.random test script (passes Flake8 now).

Several files which are expected to have LF (Line Feed aka unix line endings) contain CRLF (Carriage Return and Line Feed aka dos line endings/separators). This PR replaces CRLF by LF using dos2unix which includes adding LF to the end of the file if needed (CRLF is dos line separator while LF is unix line ending). Additionally, other whitespace related issues are resolved in the modified files.