Trigger Start the Web Crawler

1. ​GET https://opensolr.com/solr_manager/api/start_crawl
2. Parameters:
   1. ​email - (required) your opensolr registration email address
   2. api_key - (required) your opensolr api_key
   3. ​core_name - (required) the name of the core you wish to start the web crawler process for
   4. follow_docs - (optional) follow documents and images? (yes/no). Default: no
   5. clean - (optional) start fresh, or resume from where you left off? (yes/no). Default: no.
   6. auth_username - (optional) if your starting URLs are using Basic HTTP Auth, you can enter the username here.
   7. auth_password - (optional) if your starting URLs are using Basic HTTP Auth, you can enter the password here.
   8. mode - (optional) the mode to follow links. possible values are: 1 or 2 or 3 or 4. Default value is 1.
      1. Follow all DOMAIN links (full site crawl. follows all subdomains *.site.com, and all paths *.site.com/*)
      2. Follow all HOST links (limits crawl to HOST only site.com and all it's paths, doesn't follow other subdomains)
      3. Follow all PATH links (limits crawl to given PATH, site.com/path/ will not go outisde the /path/)
      4. Follow the initial URL only. not scraping any other links.

3. Example: https://opensolr.com/solr_manager/api/start_crawl?email=PLEASE_LOG_IN&
   api_key=PLEASE_LOG_IN&core_name=my_solr_core