add python modules for better SSL support during documentation check

Change-Id: Id5c966462c17656c20e43b0827f8799738bf13db
diff --git a/packer/provision/basebuild.sh b/packer/provision/basebuild.sh
index 76a0204..d86c621 100644
--- a/packer/provision/basebuild.sh
+++ b/packer/provision/basebuild.sh
@@ -59,9 +59,14 @@
         nodejs \
         npm \
         python \
+        python-certifi \
+        python-cryptography \
         python-dev \
+        python-idna \
         python-netaddr \
+        python-openssl \
         python-pip \
+        python-urllib3 \
         ssh \
         sshpass \
         zip