Update JOBSET_VERSION from 0.7.2 to 0.8.0 (#425)

Author: SujeethJinesh

src/xpk/core/cluster.py

@@ -32,7 +32,7 @@
 from .nodepool import upgrade_gke_nodepools_version
 from .system_characteristics import SystemCharacteristics
 
-JOBSET_VERSION = 'v0.7.2'
+JOBSET_VERSION = 'v0.8.0'
 INSTALLER_NCC_TCPX = 'https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/gpudirect-tcpx/nccl-tcpx-installer.yaml'
 INSTALLER_NCC_TCPXO = 'https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/gpudirect-tcpxo/nccl-tcpxo-installer.yaml'