iotests.py: don't abort if IMGKEYSECRET is undefined

Instead of using os.environ[], use .get with a default of empty string
to match the setup in check to allow us to import the iotests module
(for debugging, say) without needing a crafted environment just to
import the module.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20181221093529.23855-6-jsnow@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index d537538ba026d3819cffa58713c83bc650a65226..a34e66813a35bfa2c396d09ac3b3fcc3381a964b 100644 (file)
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -63,7 +63,7 @@ socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
 debug = False
 
 luks_default_secret_object = 'secret,id=keysec0,data=' + \
-                             os.environ['IMGKEYSECRET']
+                             os.environ.get('IMGKEYSECRET', '')
 luks_default_key_secret_opt = 'key-secret=keysec0'