Test and dev dependencies cleanup and sync with Fabric

* Update invocations min version
* Update pytest to be consistent with fabric
* Add pytest-xdist to enable `guard` task
* Other dependencies as found to be inconsistent with Fabric2

1 files changed, 2 insertions, 0 deletions

diff --git a/setup.cfg b/setup.cfg
index 00e34ca3..245b77f2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,3 +16,5 @@ max-line-length = 79
 # We use pytest-relaxed just for its utils at the moment, so disable it at the
 # plugin level until we adapt test organization to really use it.
 addopts = -p no:relaxed
+# Loop on failure
+looponfailroots = tests paramiko