update gw_id from the client code

also version numbers and tests.
14 jobs for gracedb-2.7.1 in 18 minutes and 23 seconds (queued for 15 minutes and 16 seconds)
Status Job ID Name Coverage
  Build
passed #1007645
build:debian:buster

00:02:35

passed #1007644
build:debian:stretch

00:02:35

passed #1007643
build:el7

00:01:22

passed #1007642
build:tarball

00:00:33

 
  Test
passed #1007650
docs

00:01:08

passed #1007651
syntax

00:00:55

passed #1007646
test:python2.7

00:00:56

75.0%
passed #1007647
test:python3.5

00:01:04

75.0%
passed #1007648
test:python3.6

00:00:59

75.0%
passed #1007649
test:python3.7

00:00:56

75.0%
 
  Integration
passed #1007652
integration:python2.7

00:04:23

passed #1007653
integration:python3.5

00:03:21

passed #1007654
integration:python3.6

00:03:30

passed #1007655
integration:python3.7

00:03:22