replace HTTP/2 and alike by HTTP/1.1 in HTTP status line to ensure backward-compatibility for WARC readers, see iipc/warc-specifications#15
store (normalized) protocol versions and cipher suites in WARC headers WARC-Protocol and `WARC-Cipher-Suite, see
iipc/warc-specifications#42 and iipc/warc-specifications#86
allow multiple WARC headers of the same name (WARC-Protocol may occur twice to hold the HTTP and TLS version)
Fetcher counts protocol versions, if store.protocol.versions is true. The two counters "HttpProtocolVersion" and "TlsProtocolVersion" counting the values stored by protocol-okhttp (see NUTCH-3062) in the protocol versions field of content metadata. Counted values are the protocol resp. SSL/TLS versions.
(implements #29, includes NUTCH-3062)
WARC-Protocoland `WARC-Cipher-Suite, see iipc/warc-specifications#42 and iipc/warc-specifications#86WARC-Protocolmay occur twice to hold the HTTP and TLS version)