Add python-crypto and python-openssl for rietveld uploads to work w/ oauth.

In order for us to support OAuth-authenticated access to Rietveld, we
need to be able to generate signed authorization requests in the Rietveld
upload scripts. That requires us to have either the python OpenSSL wrappers
plus OpenSSL itself installed, or to use the python pyCrypto library.

Currently the bots use python-openssl, but don't work on Windows as a result.
We add the python-openssl wrapper to be consistent, but want to switch
to pycrypto, so once we have all the bots using pycrypto, we can drop
python-openssl from the list.

R=thestig@chromium.org
BUG=371620, 375971
NOTRY=true

Review URL: https://codereview.chromium.org/287053007

Cr-Commit-Position: refs/heads/master@{#297021}

build/install-build-deps.sh

@@ -105,9 +105,10 @@ dev_list="apache2.2-bin bison cdbs curl dpkg-dev elfutils devscripts fakeroot
           libpulse-dev libsctp-dev libspeechd-dev libsqlite3-dev libssl-dev
           libudev-dev libwww-perl libxslt1-dev libxss-dev libxt-dev libxtst-dev
           mesa-common-dev openbox patch perl php5-cgi pkg-config python
-          python-cherrypy3 python-dev python-psutil rpm ruby subversion
-          ttf-dejavu-core ttf-indic-fonts ttf-kochi-gothic ttf-kochi-mincho
-          wdiff xfonts-mathml zip $chromeos_dev_list"
+          python-cherrypy3 python-crypto python-dev python-openssl
+          python-psutil rpm ruby subversion ttf-dejavu-core ttf-indic-fonts
+          ttf-kochi-gothic ttf-kochi-mincho wdiff xfonts-mathml zip
+          $chromeos_dev_list"
 
 # 64-bit systems need a minimum set of 32-bit compat packages for the pre-built
 # NaCl binaries.