Add option to install_sdp_python.sh to build P4Python with SSL.
To enable SSL support when building P4Pyton, specify
'--ssl' or '--ssl <path-to-ssl-libraries>'.
This job, SDP-64, was originally named job000545.
I imagine this should be straightforward to implement, but might
require more effort to properly test, as it takes a while to build
Python/P4Python. The test suite doesn’t including compiling and
building sample P4Python programs, which would be a nice addition
to go along with this.