autotest: add rsa and oauth2client to venv requirements

BUG=chromium:770989
TEST=bin/python_venv -c 'import rsa'
TEST=bin/python_venv -c 'from oauth2client import service_account'

Change-Id: If38e208f95bcb118670ff9eb46ae1d25669e2a6f
Reviewed-on: https://chromium-review.googlesource.com/705874
Commit-Ready: Aviv Keshet <akeshet@chromium.org>
Tested-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/venv/requirements.txt b/venv/requirements.txt
index 3d180bc..46f3004 100644
--- a/venv/requirements.txt
+++ b/venv/requirements.txt
@@ -4,6 +4,7 @@
 enum34==1.1.6
 funcsigs==1.0.2
 mock==2.0.0
+oauth2client==3.0.0
 pbr==1.10.0
 pip==8.1.2
 psutil==4.3.1
@@ -13,6 +14,7 @@
 pytest==3.1.3
 pytest-catchlog==1.2.2
 pytest-cov==2.5.1
+rsa==3.4.2
 scandir==1.5
 setuptools==28.2.0
 six==1.10.0