Correctly enable faulthandler for dev version

gns3server/crash_report.py

@@ -28,7 +28,7 @@ except ImportError:
     # raven is not installed with deb package in order to simplify packaging
     RAVEN_AVAILABLE = False
 
-from .version import __version__
+from .version import __version__, __version_info__
 from .config import Config
 from .utils.get_resource import get_resource
 
@@ -37,7 +37,7 @@ log = logging.getLogger(__name__)
 
 
 # Dev build
-if __version__[4] != 0:
+if __version_info__[3] != 0:
     import faulthandler
 
     # Display a traceback in case of segfault crash. Usefull when frozen