John Griffith 68b4aad405 Remove pretty_tox and use ostestr
This patch dumps pretty_tox.sh and gets Cinder on board
with using ostestr.  We're setting a concurrency value
of 6 (instances in the gate are 6 VCPU's), and things
seem to be stable at this value.

For folks running on 'smaller' system, it's still possible
to run in parallell; > ncpu's but if there are problems you
can still specify concurrency in your tox argument.  Tox will
take the last occurence of the conncurrency argument; so for
example if you specify "tox -epy27 -- --concurrency=4" the
interpretted value for concurrency in the run will be 4.

Closes-Bug: #1459852

Change-Id: Iae12b42e915da22c863781015512df4f30aa95ca
2015-05-29 19:42:48 +00:00
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