Rename .nova-venv to .venv.

This simplifies a number of Jenkins jobs which currently, other
than directory names, could be the same for all OpenStack
projects. By renaming the virtualenv directory, the redundant
Jenkins virtualenv build and copy jobs can be eliminated.

Change-Id: Ieaf1dac3207ecb34b911c7edcd2086809abdf49e

.gitignore

@@ -9,6 +9,7 @@ build/*
 build-stamp
 nova.egg-info
 .nova-venv
+.venv
 *.sqlite
 *.log
 po/*.pot

.mailmap

@@ -25,6 +25,8 @@
 <jake@ansolabs.com> <jake@markupisart.com>
 <jake@ansolabs.com> <admin@jakedahn.com>
 <jaypipes@gmail.com> <jpipes@serialcoder>
+<jeblair@hp.com> <james.blair@rackspace.com>
+<jeblair@hp.com> <corvus@inaugust.com>
 <jmckenty@gmail.com> <jmckenty@joshua-mckentys-macbook-pro.local>
 <jmckenty@gmail.com> <jmckenty@yyj-dhcp171.corp.flock.com>
 <jmckenty@gmail.com> <joshua.mckenty@nasa.gov>

Authors

@@ -55,7 +55,7 @@ Hisaki Ohara <hisaki.ohara@intel.com>
 Ilya Alekseyev <ilyaalekseyev@acm.org>
 Isaku Yamahata <yamahata@valinux.co.jp>
 Jake Dahn <jake@ansolabs.com>
-James E. Blair <james.blair@rackspace.com>
+James E. Blair <jeblair@hp.com>
 Jason Cannavale <jason.cannavale@rackspace.com>
 Jason Koelker <jason@koelker.net>
 Jay Pipes <jaypipes@gmail.com>