ftp: adds a config option ftp-hash for autofp-scheduler

[catenacyber]

Link to redmine ticket: https://redmine.openinfosecfoundation.org/issues/5205

Describe changes:

• Adds an option ftp-hash for autofp-scheduler : like hash except for FTP-ish flows

No S-V test as this is about a concurrency issue...

Modifies #7353 with documentation reworded

[codecov[bot]]

Codecov Report

Merging #7769 (3dea6bf) into master (9353b07) will increase coverage by 0.05%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #7769      +/-   ##
==========================================
+ Coverage   75.98%   76.04%   +0.05%     
==========================================
  Files         661      661              
  Lines      185764   185829      +65     
==========================================
+ Hits       141152   141311     +159     
+ Misses      44612    44518      -94     

Flag	Coverage Δ
fuzzcorpus	60.92% <0.00%> (+0.09%)	:arrow_up:
suricata-verify	52.51% <0.00%> (-0.01%)	:arrow_down:
unittests	60.69% <0.00%> (-0.02%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

[suricata-qa]

WARNING:

field	test	baseline	%
	tlpw2_single_stats_chk
.flow.spare	1950106	1835514	106.24%
	tlpw2_autofp_stats_chk
.flow.spare	1961944	1812994	108.22%
.flow.memuse	518281728	550537728	94.14%
	tlpw1_stats_chk
.tcp.rst	126081	105279	119.76%
	tlpr1_stats_chk
.flow.memuse	579626688	845888448	68.52%
.http.memuse	16440	49320	33.33%
	ips_afp_stats_chk
.flow.end.state.new	21669	10800	200.64%
.flow.end.tcp_liberal	145239	108000	134.48%
.flow.memuse	870105408	1081197888	80.48%
.tcp.reassembly_gap	268359	108000	248.48%
	generic_stats_chk
.capture.kernel_drops	216790	5654519	3.83%
.flow.end.state.new	7565	14867	50.88%
.flow.end.tcp_state.syn_sent	421	183	230.05%
.flow.end.tcp_state.syn_recv	3	52	5.77%
.flow.end.tcp_state.established	54867	61527	89.18%
.flow.end.tcp_liberal	100681	90436	111.33%
.flow.memuse	760807808	709384128	107.25%
.tcp.segment_memcap_drop	0	11729	0.0%
.tcp.reassembly_gap	131383	114099	115.15%
.tcp.insert_data_normal_fail	0	11358	0.0%
.app_layer.error.http.parser	77	55	140.0%
.app_layer.error.smtp.gap	112	61	183.61%
.app_layer.error.tls.gap	71394	60833	117.36%

Pipeline 8821 WARNING: THERE IS A KNOWN BAD BASELINE WITH PACKET DROPS. bE MINDFUL OF ANY RESULTS.