Fix pull request title automation
Fix pull request title automation

When I added the ability to give a custom name to a run that was kicked
off using the PR leg I did it by adding an additional parameter.  When
using a variable name there I need to use the dollar sign syntax of
groovy and not an environment variable.

pgavlin/coreclr,JonHanna/coreclr,alexperovich/coreclr,James-Ko/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,cmckinsey/coreclr,wtgodbe/coreclr,mskvortsov/coreclr,wtgodbe/coreclr,YongseopKim/coreclr,YongseopKim/coreclr,hseok-oh/coreclr,wateret/coreclr,JosephTremoulet/coreclr,alexperovich/coreclr,sjsinju/coreclr,alexperovich/coreclr,sjsinju/coreclr,sagood/coreclr,yeaicc/coreclr,James-Ko/coreclr,parjong/coreclr,AlexGhiondea/coreclr,JonHanna/coreclr,botaberg/coreclr,yizhang82/coreclr,sagood/coreclr,cydhaselton/coreclr,neurospeech/coreclr,krytarowski/coreclr,rartemev/coreclr,cmckinsey/coreclr,russellhadley/coreclr,AlexGhiondea/coreclr,yeaicc/coreclr,jamesqo/coreclr,krk/coreclr,pgavlin/coreclr,krk/coreclr,qiudesong/coreclr,cshung/coreclr,ruben-ayrapetyan/coreclr,pgavlin/coreclr,parjong/coreclr,ruben-ayrapetyan/coreclr,yizhang82/coreclr,mskvortsov/coreclr,botaberg/coreclr,yeaicc/coreclr,gkhanna79/coreclr,russellhadley/coreclr,yeaicc/coreclr,kyulee1/coreclr,James-Ko/coreclr,pgavlin/coreclr,qiudesong/coreclr,cydhaselton/coreclr,hseok-oh/coreclr,russellhadley/coreclr,dpodder/coreclr,rartemev/coreclr,sjsinju/coreclr,mskvortsov/coreclr,sagood/coreclr,parjong/coreclr,YongseopKim/coreclr,JosephTremoulet/coreclr,sjsinju/coreclr,ragmani/coreclr,gkhanna79/coreclr,gkhanna79/coreclr,yizhang82/coreclr,wateret/coreclr,qiudesong/coreclr,cshung/coreclr,neurospeech/coreclr,cmckinsey/coreclr,ruben-ayrapetyan/coreclr,tijoytom/coreclr,ragmani/coreclr,James-Ko/coreclr,cydhaselton/coreclr,ruben-ayrapetyan/coreclr,cydhaselton/coreclr,cshung/coreclr,AlexGhiondea/coreclr,YongseopKim/coreclr,krk/coreclr,wtgodbe/coreclr,kyulee1/coreclr,JosephTremoulet/coreclr,ruben-ayrapetyan/coreclr,ragmani/coreclr,sjsinju/coreclr,krytarowski/coreclr,botaberg/coreclr,russellhadley/coreclr,dpodder/coreclr,yizhang82/coreclr,JonHanna/coreclr,ragmani/coreclr,cydhaselton/coreclr,wtgodbe/coreclr,hseok-oh/coreclr,poizan42/coreclr,wateret/coreclr,dpodder/coreclr,russellhadley/coreclr,poizan42/coreclr,dpodder/coreclr,mskvortsov/coreclr,jamesqo/coreclr,yizhang82/coreclr,cmckinsey/coreclr,tijoytom/coreclr,krk/coreclr,gkhanna79/coreclr,hseok-oh/coreclr,sagood/coreclr,hseok-oh/coreclr,ragmani/coreclr,poizan42/coreclr,JonHanna/coreclr,botaberg/coreclr,jamesqo/coreclr,tijoytom/coreclr,YongseopKim/coreclr,sagood/coreclr,yeaicc/coreclr,poizan42/coreclr,ragmani/coreclr,rartemev/coreclr,botaberg/coreclr,neurospeech/coreclr,yeaicc/coreclr,James-Ko/coreclr,James-Ko/coreclr,botaberg/coreclr,qiudesong/coreclr,mskvortsov/coreclr,cmckinsey/coreclr,cshung/coreclr,pgavlin/coreclr,wateret/coreclr,mmitche/coreclr,wateret/coreclr,hseok-oh/coreclr,mskvortsov/coreclr,rartemev/coreclr,parjong/coreclr,sagood/coreclr,cmckinsey/coreclr,tijoytom/coreclr,qiudesong/coreclr,yeaicc/coreclr,JosephTremoulet/coreclr,YongseopKim/coreclr,cydhaselton/coreclr,dpodder/coreclr,kyulee1/coreclr,kyulee1/coreclr,jamesqo/coreclr,rartemev/coreclr,krytarowski/coreclr,dpodder/coreclr,neurospeech/coreclr,alexperovich/coreclr,cshung/coreclr,rartemev/coreclr,poizan42/coreclr,krk/coreclr,JonHanna/coreclr,cshung/coreclr,neurospeech/coreclr,wtgodbe/coreclr,gkhanna79/coreclr,JosephTremoulet/coreclr,alexperovich/coreclr,neurospeech/coreclr,tijoytom/coreclr,mmitche/coreclr,cmckinsey/coreclr,jamesqo/coreclr,gkhanna79/coreclr,mmitche/coreclr,poizan42/coreclr,krytarowski/coreclr,ruben-ayrapetyan/coreclr,mmitche/coreclr,alexperovich/coreclr,parjong/coreclr,wateret/coreclr,krytarowski/coreclr,tijoytom/coreclr,mmitche/coreclr,kyulee1/coreclr,AlexGhiondea/coreclr,russellhadley/coreclr,yizhang82/coreclr,krk/coreclr,JonHanna/coreclr,krytarowski/coreclr,wtgodbe/coreclr,jamesqo/coreclr,AlexGhiondea/coreclr,parjong/coreclr,sjsinju/coreclr,qiudesong/coreclr,kyulee1/coreclr,pgavlin/coreclr,AlexGhiondea/coreclr