Updating Travis CI to use new build scripts

tools/run-nrtest.sh

@@ -69,7 +69,7 @@ print_usage() {
 
 # Default option values
 compare='true'
-ref_build_id=
+ref_build_id='unknown'
 sut_build_id='local'
 test_path='nrtestsuite'
 
@@ -87,7 +87,7 @@ shift $(($OPTIND - 1))
 
 
 # determine ref_build_id from manifest file
-if [ -z $ref_build_id ]; then
+if [[ $ref_build_id == 'unknown' ]] && [[ $compare == 'true' ]]; then
   description=(`cat ${test_path}/manifest.json | jq '.Application.description | splits(" ")'`)
   ref_build_id=${description[1]//\"/}
 fi