switch to orca 8

Author: chenziliang

ci/Jenkinsfile

@@ -29,7 +29,7 @@ withSplunkWrapNode("master") {
                                    cd ci
 
                                    # Workaround to use 0.8.0
-                                   sed -i"" "s/^splunk_image_version/#splunk_image_version/g" /build/.orca/orca.conf
+                                   sed -i"" "s/^splunk_image_version = 0.7/splunk_image_version = 0.8/g" /build/.orca/orca.conf
                                    sed -i"" "s/^splunk_ansible_version/#splunk_ansible_version/g" /build/.orca/orca.conf
                                    cat /build/.orca/orca.conf