Use BROWSER environment variable to select browser

Author: kangasta

docs/tutorials/jenkins/parallel-robot-pipeline/Jenkinsfile

@@ -17,6 +17,9 @@ pipeline {
             args '--entrypoint=""'
             reuseNode true
           } }
+          environment {
+            BROWSER = "chromium"
+          }
           steps {
             sh "robot -d robot_output -l none -r none -o chromium.xml -N Chromium -v URL:${params.URL} --nostatusrc $d/suites/"
             // If reuseNode true was not used, we would have to stash the output XML.
@@ -29,6 +32,9 @@ pipeline {
             args '--entrypoint=""'
             reuseNode true
           } }
+          environment {
+            BROWSER = "firefox"
+          }
           steps {
             sh "robot -d robot_output -l none -r none -o b.xml -N Firefox -v URL:${params.URL} --nostatusrc $d/suites/"
             // If reuseNode true was not used, we would have to stash the output XML.