add support for g2.8xlarge

closes #526

Author: jtriley

starcluster/static.py

@@ -135,6 +135,7 @@ def create_sc_config_dirs():
     'cc2.8xlarge': ['x86_64'],
     'cg1.4xlarge': ['x86_64'],
     'g2.2xlarge': ['x86_64'],
+    'g2.8xlarge': ['x86_64'],
     'cr1.8xlarge': ['x86_64'],
     'hi1.4xlarge': ['x86_64'],
     'hs1.8xlarge': ['x86_64'],
@@ -166,7 +167,7 @@ def create_sc_config_dirs():
 
 CLUSTER_COMPUTE_TYPES = ['cc1.4xlarge', 'cc2.8xlarge']
 
-CLUSTER_GPU_TYPES = ['g2.2xlarge', 'cg1.4xlarge']
+CLUSTER_GPU_TYPES = ['g2.2xlarge', 'g2.8xlarge', 'cg1.4xlarge']
 
 CLUSTER_HIMEM_TYPES = ['cr1.8xlarge']