[RELEASE] Released version 2.4.18

Released version 2.4.18 with the following main changes :
    - CI: determine actual LibreSSL version dynamically
    - MEDIUM: http-ana: Add a proxy option to restrict chars in request header names
    - BUILD: fix build warning on solaris based systems with __maybe_unused.
    - MINOR: tools: add get_exec_path implementation for solaris based systems.
    - BUG/MINOR: ssl: Fix crash when no private key is found in pem
    - REGTESTS: abortonclose: Fix some race conditions
    - BUG/MEDIUM: config: Reset outline buffer size on realloc error in readcfgfile()
    - BUG/MINOR: check: Reinit the buffer wait list at the end of a check
    - BUG/MINOR: cfgparse: abort earlier in case of allocation error
    - BUG/MINOR: peers: fix error reporting of "bind" lines
    - BUILD/MINOR: cpuset fix build for FreeBSD 13.1
    - CI: determine actual OpenSSL version dynamically
    - BUG/MEDIUM: tools: Fix `inet_ntop` usage in sa2str
    - BUG/MEDIUM: http: Properly reject non-HTTP/1.x protocols
    - BUG/MEDIUM: resolvers: Don't defer resolutions release in deinit function
    - BUG/MEDIUM: peers: fix segfault using multiple bind on peers sections
    - BUG/MEDIUM: peers: prevent unitialized multiple listeners on peers section
    - BUG/MEDIUM: sample: Fix adjusting size in word converter
    - REGTESTS: Do not use REQUIRE_VERSION for HAProxy 2.5+ (2)
    - SCRIPTS: add make-releases-json to recreate a releases.json file in download dirs
    - SCRIPTS: make publish-release try to launch make-releases-json
    - DOC: peers: indicate that some server settings are not usable
    - DOC: peers: clarify when entry expiration date is renewed.
    - DOC: peers: fix port number and addresses on new peers section format
    - DOC: intro: adjust the numbering of paragrams to keep the output ordered
    - BUG/MINOR: ssl_ckch: Free error msg if commit changes on a cert entry fails
    - BUG/MEDIUM: ssl_ckch: Don't delete a cert entry if it is being modified
    - BUG/MINOR: ssl_ckch: Don't duplicate path when replacing a cert entry
    - BUG/MEDIUM: ssl_ckch: Rework 'commit ssl cert' to handle full buffer cases
    - BUG/MEDIUM: ssl/crt-list: Rework 'add ssl crt-list' to handle full buffer cases
    - MEDIUM: http-ana: Always report rewrite failures as PRXCOND in logs
    - REGTESTS: abortonclose: Add a barrier to not mix up log messages
    - REGTESTS: http_request_buffer: Increase client timeout to wait "slow" clients
    - BUG/MINOR: ssl_ckch: Dump cert transaction only once if show command yield
    - BUG/MINOR: ssl_ckch: Fix possible uninitialized value in show_cert I/O handler
    - REGTESTS: http_abortonclose: Extend supported versions
    - REGTESTS: restrict_req_hdr_names: Extend supported versions
    - BUILD: compiler: implement unreachable for older compilers too
    - BUG/MEDIUM: mailers: Set the object type for check attached to an email alert
    - BUG/MINOR: trace: Test server existence for health-checks to get proxy
    - BUG/MINOR: checks: Properly handle email alerts in trace messages
    - REGTESTS: healthcheckmail: Update the test to be functionnal again
    - REGTESTS: healthcheckmail: Relax health-check failure condition
    - BUG/MINOR: cli/stats: add missing trailing LF after JSON outputs
    - BUG/MINOR: server: do not enable DNS resolution on disabled proxies
    - BUG/MINOR: cli/stats: add missing trailing LF after "show info json"
    - BUG/MINOR: tcp-rules: Make action call final on read error and delay expiration
    - BUG/MEDIUM: ssl/cli: crash when crt inserted into a crt-list
    - MEDIUM: mux-h2: try to coalesce outgoing WINDOW_UPDATE frames
    - BUG/MINOR: ssl: Do not look for key in extra files if already in pem
    - BUG/MINOR: http-ana: Set method to HTTP_METH_OTHER when an HTTP txn is created
    - BUG/MINOR: http-fetch: Use integer value when possible in "method" sample fetch
    - MINOR: fd: add a new FD_DISOWN flag to prevent from closing a deleted FD
    - BUG/MEDIUM: ssl/fd: unexpected fd close using async engine
    - BUILD: Makefile: Add Lua 5.4 autodetect
    - CI: re-enable gcc asan builds
    - MINOR: fd: Add BUG_ON checks on fd_insert()
    - BUG/MINOR: peers/config: always fill the bind_conf's argument
    - BUG/MINOR: http-check: Preserve headers if not redefined by an implicit rule
    - BUG/MINOR: http-act: Properly generate 103 responses when several rules are used
    - BUG/MINOR: peers: fix possible NULL dereferences at config parsing
    - BUG/MINOR: http-htx: Fix scheme based normalization for URIs wih userinfo
    - BUG/MEDIUM: http-fetch: Don't fetch the method if there is no stream
    - REGTEESTS: filters: Fix CONNECT request in random-forwarding script
    - BUG/MINOR: mux-h1: Be sure to commit htx changes in the demux buffer
    - BUG/MEDIUM: http-ana: Don't wait to have an empty buf to switch in TUNNEL state
    - BUG/MEDIUM: mux-h1: Handle connection error after a synchronous send
    - MEDIUM: mworker: set the iocb of the socketpair without using fd_insert()
    - BUG/MEDIUM: tools: avoid calling dlsym() in static builds
    - BUILD: makefile: Fix install(1) handling for OpenBSD/NetBSD/Solaris/AIX
    - BUG/MEDIUM: tools: avoid calling dlsym() in static builds (try 2)
    - BUG/MINOR: tools: fix statistical_prng_range()'s output range
    - REGTESTS: Fix some scripts to be compatible with 2.4 and prior
    - BUG/MEDIUM: mworker: proc_self incorrectly set crashes upon reload
    - BUILD: add detection for unsupported compiler models
    - BUG/MINOR: backend: Fallback on RR algo if balance on source is impossible
    - BUG/MINOR: sockpair: wrong return value for fd_send_uxst()
4 files changed