[RELEASE] Released version 2.1-dev5

Released version 2.1-dev5 with the following main changes :
    - BUG/MEDIUM: ssl/cli: don't alloc path when cert not found
    - BUG/MINOR: ssl/cli: unable to update a certificate without bundle extension
    - BUG/MINOR: ssl/cli: fix an error when a file is not found
    - MINOR: ssl/cli: replace the default_ctx during 'commit ssl cert'
    - DOC: fix date and http_date keywords syntax
    - MINOR: peers: Add "log" directive to "peers" section.
    - BUG/MEDIUM: mux-h1: Disable splicing for chunked messages
    - BUG/MEDIUM: stream: Be sure to support splicing at the mux level to enable it
    - MINOR: flt_trace: Rename macros to print trace messages
    - MINOR: trace: Add a set of macros to trace events if HA is compiled with debug
    - MEDIUM: stream/trace: Register a new trace source with its events
    - MINOR: doc: http-reuse connection pool fix
    - BUG/MEDIUM: stream: Be sure to release allocated captures for TCP streams
    - MINOR: http-ana: Remove the unused function http_reset_txn()
    - BUG/MINOR: action: do-resolve now use cached response
    - BUG: dns: timeout resolve not applied for valid resolutions
    - DOC: management: fix typo on "cache_lookups" stats output
    - BUG/MINOR: stream: init variables when the list is empty
    - BUG/MEDIUM: tasks: Make tasklet_remove_from_tasklet_list() no matter the tasklet.
    - BUG/MINOR: queue/threads: make the queue unlinking atomic
    - BUG/MEDIUM: Make sure we leave the session list in session_free().
    - CLEANUP: session: slightly simplify idle connection cleanup logic
    - MINOR: memory: also poison the area on freeing
    - CLEANUP: cli: use srv_shutdown_streams() instead of open-coding it
    - CLEANUP: stats: use srv_shutdown_streams() instead of open-coding it
    - BUG/MEDIUM: listeners: always pause a listener on out-of-resource condition
    - BUILD: contrib/da: remove an "unused" warning
    - BUG/MEDIUM: filters: Don't call TCP callbacks for HTX streams
    - MEDIUM: filters: Adapt filters API to allow again TCP filtering on HTX streams
    - MINOR: freq_ctr: Make the sliding window sums thread-safe
    - MINOR: stream: Remove the lock on the proxy to update time stats
    - MINOR: counters: Add fields to store the max observed for {q,c,d,t}_time
    - MINOR: stats: Report max times in addition of the averages for sessions
    - MINOR: contrib/prometheus-exporter: Report metrics about max times for sessions
    - BUG/MINOR: contrib/prometheus-exporter: Rename some metrics
    - MINOR: contrib/prometheus-exporter: report the number of idle conns per server
    - DOC: Add missing stats fields in the management manual
    - BUG/MINOR: mux-h1: Properly catch parsing errors on payload and trailers
    - BUG/MINOR: mux-h1: Don't set CS_FL_EOS on a read0 when receiving data to pipe
    - MINOR: mux-h1: Set EOI on the conn-stream when EOS is reported in TUNNEL state
    - MINOR: sink: Set the default max length for a message to BUFSIZE
    - MINOR: ring: make the parse function automatically set the handler/release
    - BUG/MINOR: log: make "show startup-log" use a ring buffer instead
    - MINOR: stick-table: allow sc-set-gpt0 to set value from an expression
4 files changed