RAVEN and TLS changes

Added support for time/space_coinc_far RAVEN fields for superevents.
Removed restriction that limited TLS to 1.0. Necessary to upgrade TLS
version support on the server-side.
10 jobs for gracedb-2.6.0 in 4 minutes and 38 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #833428
build:debian:jessie

00:03:20

passed #833429
build:debian:stretch

00:01:30

passed #833427
build:el7

00:01:04

passed #833426
build:tarball

00:00:29

 
  Test
passed #833434
docs

00:01:16

passed #833435
syntax

00:00:46

passed #833430
test:python2.7

00:00:52

84.0%
passed #833431
test:python3.5

00:00:41

84.0%
passed #833432
test:python3.6

00:00:47

84.0%
passed #833433
test:python3.7

00:00:42

84.0%