Point sync_csv script to legacy subdomain

[rviscomi]

sync_csv.sh points to http://httparchive.org for the downloads folder containing CSV data. Since the launch of the new website, the new host for this data is https://legacy.httparchive.org. The URLs need to be updated in this script to point to the appropriate server.

This caused a pipeline failure during the 2018_04_01 crawl and had to be manually fixed and restarted to complete.

[rviscomi]

FYI this issue was identified by the logs:

root@worker:~/code# tail /var/log/HAimport.log

Processing Apr_1_2018, mobile: 1, archive: mobile_Apr_1_2018

Downloading data for mobile_Apr_1_2018

https://httparchive.org/downloads/httparchive_mobile_Apr_1_2018_pages.csv.gz:

2018-04-13 08:00:02 ERROR 404: NOT FOUND.

Pages data for Apr_1_2018 is missing, exiting

Processing Apr_1_2018, mobile: 0, archive: Apr_1_2018

Downloading data for Apr_1_2018

https://httparchive.org/downloads/httparchive_Apr_1_2018_pages.csv.gz:

2018-04-13 15:00:02 ERROR 404: NOT FOUND.

Pages data for Apr_1_2018 is missing, exiting