security/py-cryptography: Update to 1.0.2

• Update to 1.0.2
• Strip shared libraries
• Add patch to support building with LibreSSL
• Remove ALPN patch (upstreamed)

Changes:

https://github.com/pyca/cryptography/blob/1.0.2/CHANGELOG.rst

PR: 203819
Submitted by: Ralf van der Enden <tremere cainites net>