InfluxDB command line interface import doesn't support windows line endings

I'm basically re-opening #10507 since it was automatically closed. I wasted a morning trying to import valid data only to discover that CRLF line endings misinterpreted.

**System info:**
InfluxDB shell version 1.7.8 for Windows 10 1703
InfluxDB server version 1.7.8 running on Windows 10 1703

**Steps to reproduce:**

Run influx command line interface using import option
influx.exe -host x.y.z -import -path test.txt
Specify path to file with windows line endings (\r\n)
test.txt

**Expected behavior:**
File should be imported correctly.

**Actual behavior:**
File fails to import with following error.

2018/11/20 10:56:29 error writing batch: {"error":"unable to parse ''82d1ca6a-f580-420f-b808-ecff8ecb18d9' value=0 1439856000\r': bad timestamp\n...

Converting the file to unix style line endings (\n) fixes the issue, but it's not entirely clear this is the problem from the error message.