handle network failures when getting repository source code

slapos/recipe/erp5.recipe.testnode/setup.py

 from setuptools import setup, find_packages
 
 name = "erp5.recipe.testnode"
-version = '1.0.22'
+version = '1.0.23'
 
 def read(name):
   return open(name).read()

slapos/recipe/erp5.recipe.testnode/src/erp5/recipe/testnode/testnode.py

@@ -97,6 +97,7 @@ repository = %(repository_path)s
   try:
     while True:
       # kill processes from previous loop if any
+      try:
         for pgpid in process_group_pid_set:
           try:
             os.killpg(pgpid, signal.SIGTERM)
@@ -206,6 +207,9 @@ repository = %(repository_path)s
           process_group_pid_set.add(run_test_suite.pid)
           run_test_suite.wait()
           process_group_pid_set.remove(run_test_suite.pid)
+      except SubprocessError:
+        time.sleep(120)
+        continue
 
   finally:
     # Nice way to kill *everything* generated by run process -- process