Fixes bug that kept deletion code from running when there was an exception thrown in the prepare stage
Fixes bug that kept deletion code from running when there was an
exception thrown in the prepare stage

askdaddy/PerfKitBenchmarker,emaeliena/PerfKitBenchmarker,ehankland/PerfKitBenchmarker,tvansteenburgh/PerfKitBenchmarker,kivio/PerfKitBenchmarker,lleszczu/PerfKitBenchmarker,gablg1/PerfKitBenchmarker,gablg1/PerfKitBenchmarker,AdamIsrael/PerfKitBenchmarker,emaeliena/PerfKitBenchmarker,syed/PerfKitBenchmarker,meteorfox/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,msurovcak/PerfKitBenchmarker,askdaddy/PerfKitBenchmarker,tvansteenburgh/PerfKitBenchmarker,lleszczu/PerfKitBenchmarker,ksasi/PerfKitBenchmarker,kivio/PerfKitBenchmarker,AdamIsrael/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,meteorfox/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,juju-solutions/PerfKitBenchmarker,ksasi/PerfKitBenchmarker,juju-solutions/PerfKitBenchmarker,ehankland/PerfKitBenchmarker,mateusz-blaszkowski/PerfKitBenchmarker,mateusz-blaszkowski/PerfKitBenchmarker,syed/PerfKitBenchmarker,GoogleCloudPlatform/PerfKitBenchmarker,msurovcak/PerfKitBenchmarker