* Test-pinnedpubkey-hash-https.py: Read hashed pubkey from file
* Test-pinnedpubkey-hash-no-check-fail-https.py: Use invalid hash
* certs/make_ca.sh: New script to generate test certs non-interactive
* certs/ca-template.cfg: New file (template for CA cert)
* certs/server-template.cfg: New file (template for server cert)
* certs/server-pubkey-sha256.base64: New file (pubkey sha256 hash)
