2022-02-15: rewritten for cmk 2.0
2022-02-19: moved global options under "Default settings"
            added per url settings
            added proxy settings (--proxy, --proxy-user, --proxy-digest/--proxy-basic/--proxy-ntlm/--proxy-anyauth)
            added follow redirects (--location)
            added don't verify certificates (--insecure)
            moved the curl.exe deployment to curl_windows.mkp package
2022-02-20: initial release
2022-02-20: removed "url_effective" from format file (bad output with linux: "url_effective":http://"https//checkmk.com")
            added num_connects, num_redirects, size_download, size_header, speed_download
            added redirect_url, remote_ip, scheme, http_version, http_connect
2022-02-21: added tls/ssl version (--tlsv1.3, --tlsv1.2, --tlsv1.1, --tlsv1.0, --tlsv1,  --sslv3, --sslv2)
            added http version (--http2, --http1.1, --http1.0)
            added header only (--head)
            added user authentication (--user, --basic, --digest, --ntlm, --ntlm-wb, --negotiate, --anyauth)
            added to proxy authentication (--proxy-negotiate)
2022-02-22: added option for cURL check plugin  
            fixed search for curl.exe
2022-02-23: changed items on service info line           
            fixed handling aof user_auth settings
            fixed handling of options from curl.cfg for windows
2022-02-24: changed forbidden_chars from '<>| ' to '"<>#%{}|\^~[]` ' + "'"      
            removed deployment of curl.format
            removed curl.format, replaced by  -w %{json}
            extended search for curl executable to agent dir
            added perfdata/wato for num_headers, size_request, size_upload, speed_upload
            added static output for content_type, errormsg, method, redirect_url, referer, url, url_effective, curl_version
            added --noproxy '*' option
2022-02-25: added plugin interval and timeout options
            added double quotas to curl options for linux to be equal with windows
            optimized plugin file write code
            added noproxy option to default settings
            added option to show raw curl data
2022-02-26: added proxy protocol (--socks4, --socks4a, --socks4a, --socks5-hostname)            
            removed 'http://' prefix from proxy server address
2022-02-27: added support to search for strings in cURL output (Linux script, WATO default settings)
            rewrittenwWindows script for powershell (from cmd)
2022-02-28: added support to search for strings in cURL output (windows script)
            extended search for strings to URL settings
            added state_item_not_found option
2022-03-01: added options --limit-rate, --max-filesize, --max-time, --speed-limit, --speed-time, --connect-timeout
            added options --user-agent, --compressed, --no-alpn, --no-npn, --tcp-fastopen, --tcp-nodelay,
            added options --cert-status
2022-03-02: added options --referer -header and api_key_header (header from password store)
2022-03-03: fixed handling of spaces in options string in linux script
2022-03-04: fixed Requests headers per url settings
2022-03-05: added support for search in header strings            
2022-03-06: added support for tls/certificate information
2022-03-10: optimized code for perfdata
            optimized generation of upper/lower limit
            added transform for ms to s -> no need in th agent to change the value any more
2022-03-11: added redirection (--location, --location-trust, --max-redirs)
            added cert_verify (--insecure, --cert-status, --ssl-no-revoke)
            added advanced_settings (--no-alpn, --no-npn, --tcp-fastopen, -tcp-nodelay)
            removed get_session_data. moved to curl default options
            added check to avoid duplicate service names in url list
            added --location-trust, --max-redirs
            reworked redirect (--location, --location-trust, --max-redirs)
            reworked cert verify (-insecure, --cert-status, --ssl-no-revok)
            reworked advanced_settings (--no-alpn, --no-npn, --tcp-fastopen, -tcp-nodelay)
            removed get_session_data. moved to curl default options            
            added --verbose --stderr $TEMP_DIR\curl_session to CURL_OPTIONS
2022-03-12: added --cacert option
            added cafile and capath to Cert info section
            added max_age
            fixed api-key-header handling
            fixed escapes for json format in TLS_INFO
2022-03-13: moved curl_item files to curl sub directory under MK_CONFDIR
            changed url/service_name from separate dict entries to tuple
            changed headers to read from curl_item_x.header file            
            added post data
            made some entries fordable (Default options/Per URL settings, CA Cert)
            changed url and service_name to curl_service tuple
            changed headers to listof tuple
            moved curl_item files to curl sub directory under $MK_CONFDIR