[PGPRO-3182] Increase timeout to docker socket in tests.

Sometimes docker seems to randomly hang, see
docker/compose#3927

tags: multimaster

tests/lib/failure_injector.py

@@ -1,10 +1,13 @@
 import docker
-
+import os
 
 class FailureInjector(object):
 
     def __init__(self, node=None):
-        self.docker_api = docker.from_env()
+        timeout = os.environ.get('DOCKER_CLIENT_TIMEOUT')
+        if timeout is not None:
+            timeout = int(timeout)
+        self.docker_api = docker.from_env(timeout=timeout)
 
     def container_exec(self, node, command):
         docker_node = self.docker_api.containers.get(node)

tests/lib/test_helper.py

@@ -28,6 +28,12 @@
 # https://docs.gitlab.com/ee/ci/docker/using_docker_images.html#accessing-the-services
 NODE_HOST = 'docker' if 'DOCKER_HOST' in os.environ else '127.0.0.1'
 
+# sometimes docker seems to randomly hang for a default 60s, see
+# https://github.com/docker/compose/issues/3927
+# increase timeout in both compose in direct API calls
+os.environ['DOCKER_CLIENT_TIMEOUT'] = '180'
+os.environ['COMPOSE_HTTP_TIMEOUT'] = '180'
+
 class MMTestCase(unittest.TestCase):
     @classmethod
     def collectLogs(cls, referee=False):