Set libva driver path in env on sles15 (#40)

* Set libva driver path in env on sles15

* Refactor runTestCommand logic

[ROCm/rocjpeg commit: c3d07f42a0]

projects/rocjpeg/.jenkins/common.groovy

@@ -26,17 +26,20 @@ def runCompileCommand(platform, project, jobName, boolean debug=false, boolean s
 def runTestCommand (platform, project) {
 
     String libLocation = ''
+    String libvaDriverPath = ""
 
     if (platform.jenkinsLabel.contains('rhel')) {
         libLocation = ':/usr/local/lib'
     }
     else if (platform.jenkinsLabel.contains('sles')) {
         libLocation = ':/usr/local/lib'
+        libvaDriverPath = "export LIBVA_DRIVERS_PATH=/opt/amdgpu/lib64/dri"
     }
 
     def command = """#!/usr/bin/env bash
                 set -ex
                 export HOME=/home/jenkins
+                ${libvaDriverPath}
                 echo make test
                 cd ${project.paths.project_build_prefix}/build/release
                 LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:/opt/rocm/lib${libLocation} make test ARGS="-VV --rerun-failed --output-on-failure"