Remove YAML from HSE

[tristan957]

Removes hse_util/yaml and libyaml as a dependency. We have decided to plow forward with JSON, and libyaml was barely even used within HSE anywhere. I changed the CLI to produce JSON where it was previously YAML and I changed merge_test to use JSON.

Signed-off-by: Tristan Partin [email protected]

[tristan957]

Not going to merge until the parent PR is merged.

[alexttx]

I don't think the CLI should produce JSON by default. I think we used YAML because it was both structured and human readable.

[tristan957]

Yea I don't think so either. Merely a place holder for the PR until someone proposes better options though it has been a while since I looked at this PR and don't really plan to come back to it until the REST PR merges.

[alexttx]

I'm running on master with this PR + a few others merged locally and ran into the following issue. Not sure if it a new issue with this PR or master.

[0 deepblue ~]$ hse kvdb info $db
AddressSanitizer:DEADLYSIGNAL
=================================================================
==2634008==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f6f4a6fbf3d bp 0x7ffd37c00300 sp 0x7ffd37bffaa8 T0)
==2634008==The signal is caused by a READ memory access.
==2634008==Hint: address points to the zero page.
    #0 0x7f6f4a6fbf3d in __strlen_avx2_rtm (/lib64/libc.so.6+0x18df3d)
    #1 0x7f6f4b01bb1c in __interceptor_puts.part.0 (/lib64/libasan.so.6+0x3fb1c)
    #2 0x40435e in kvdb_info_props ../../../../home/atomlinson/w/src/hse/hse/cli/cli_util.c:76
    #3 0x404614 in kvdb_info_print ../../../../home/atomlinson/w/src/hse/hse/cli/cli_util.c:98
    #4 0x4094c8 in cli_hse_kvdb_info_impl ../../../../home/atomlinson/w/src/hse/hse/cli/hse_cli.c:680
    #5 0x40a8cc in cli_hse_kvdb_info ../../../../home/atomlinson/w/src/hse/hse/cli/hse_cli.c:932
    #6 0x409aee in cli_hse_kvdb ../../../../home/atomlinson/w/src/hse/hse/cli/hse_cli.c:771
    #7 0x40fcf4 in cli_hse ../../../../home/atomlinson/w/src/hse/hse/cli/hse_cli.c:1872
    #8 0x40ff76 in main ../../../../home/atomlinson/w/src/hse/hse/cli/hse_cli.c:1892
    #9 0x7f6f4a59b55f in __libc_start_call_main (/lib64/libc.so.6+0x2d55f)
    #10 0x7f6f4a59b60b in __libc_start_main_alias_1 (/lib64/libc.so.6+0x2d60b)
    #11 0x4038e4 in _start (/opt/hse/bin/hse3+0x4038e4)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib64/libc.so.6+0x18df3d) in __strlen_avx2_rtm
==2634008==ABORTING

[tristan957]

Probably with this PR. Will look into it. Thanks for the report. You just compiled with -Db_sanitize=address,undefined