fix(builds):User should be able to do a deploy an app after a failed attempt

Author: Keerthan Mala

rootfs/api/models/build.py

@@ -46,6 +46,7 @@ def create(self, user, *args, **kwargs):
         except Exception as e:
             if 'new_release' in locals():
                 new_release.delete()
+            self.delete()
 
             raise DeisException(str(e)) from e