browser_test.rb: Open the browser just once

When setting up the browser we just need to open it once, then we just need to modify the URL
13 jobs for feature-c/4407-open-run-with-two-analysis in 11 minutes and 25 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Test Tools
passed #714040
test_tools

00:00:12

 
  Test Quality
passed #714041
web
code_quality

00:00:10

 
  Test Unit
passed #714042
web
test_browser_unit

00:00:22

 
  Deploy Review
passed #714043
web
deploy_review

00:00:18

passed #714044
web manual
stop_deploy_review

00:00:10

 
  Test Functional
passed #714047
web
chrome-browser-functional

00:03:57

passed #714045
web
ff32-browser-functional

00:03:41

passed #714046
web
ff45-browser-functional

00:04:27

passed #714048
legacy
old-chrome-browser-functional

00:03:52

 
  Test Functional External
passed #714051
web
chrome-browser-functional-external

00:01:09

passed #714049
web
ff32-browser-functional-external

00:01:18

passed #714050
web
ff45-browser-functional-external

00:01:35

passed #714052
legacy
old-chrome-browser-functional-external-chrome

00:01:21