Update paramiko for cordtest container.

Change-Id: Ib6ae2b16c90031b845d1e56c71822b37e72bcebd
diff --git a/Dockerfile.tester b/Dockerfile.tester
index ab00a3b..6a174a8 100644
--- a/Dockerfile.tester
+++ b/Dockerfile.tester
@@ -8,7 +8,7 @@
         openvswitch-common openvswitch-switch \
         python-twisted python-sqlite sqlite3 python-pexpect telnet arping isc-dhcp-server \
         python-paramiko python-maas-client python-keystoneclient python-neutronclient python-glanceclient \
-        python-novaclient
+        python-novaclient python-dev libffi-dev libssl-dev
 RUN easy_install nose
 RUN mkdir -p /root/ovs
 WORKDIR /root
@@ -18,6 +18,8 @@
  ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var --disable-ssl && make && make install)
 RUN service openvswitch-switch restart || /bin/true
 RUN pip install scapy==2.3.2 scapy-ssl_tls==1.2.2 monotonic configObj docker-py pyyaml nsenter pyroute2 netaddr python-daemon
+RUN pip install -U cryptography
+RUN pip install -U paramiko
 RUN mv /usr/sbin/tcpdump /sbin/
 RUN ln -sf /sbin/tcpdump /usr/sbin/tcpdump
 RUN mv /usr/sbin/dhcpd /sbin/