Read timeouts (#210)

* Added reproducible test for early timeout reading from output streams when no output is available from stream.
* Use gevent timeout instead of socket poll to avoid timeout being raised early when socket is blocked from another stream - resolves #180
* Updated changelog.

Author: pkittenis

.travis.yml

@@ -30,7 +30,7 @@ script:
   - eval `ssh-agent -s`
   - pytest --cov-append --cov=pssh tests/test_imports.py tests/test_output.py tests/test_utils.py
   - pytest --reruns 5 --cov-append --cov=pssh tests/miko
-  - pytest --reruns 5 --cov-append --cov=pssh tests/native/test_tunnel.py tests/native/test_agent.py
+  - pytest --reruns 10 --cov-append --cov=pssh tests/native/test_tunnel.py tests/native/test_agent.py
   - pytest --reruns 5 --cov-append --cov=pssh tests/native/test_*_client.py
   - pytest --reruns 5 --cov-append --cov=pssh tests/ssh
   - flake8 pssh

Changelog.rst

@@ -1,6 +1,15 @@
 Change Log
 ============
 
+1.12.1
+++++++
+
+Fixes
+------
+
+* Reading from output streams with timeout via `run_command(<..>, timeout=<timeout>)` would raise timeout early when trying to read from a stream with no data written to it while other streams have pending data - #180.
+
+
 1.12.0
 ++++++