Replacing urllib2 with httpt.HTTPTest for captiveportal test
Construt TrueHeaders using string parameter
s/threads/defereds/
removed unnecessary import
Support for performing NS lookup in ooni.templates.DNST
Make get_auth_nameservers use ooni.templates.DNST
Support for using system dns setting for performALookup in
ooni.templates.DNST
Replaced dnspython with ooni.templates.dnst for performing A Lookups in
Captiveportal test
Removed unnecessary print
Support for performing SOA Lookup in ooni.templates.DNST
Replaced dnspython with ooni.templates.dnst for performing SOA Lookup in
Captiveportal test
Removed unnecessary import
Refactoring ooni.templates.DNST
Dependency dnspython removed
Refactored ooni.templates.dnst