LSan: Suppress libssl.so leak for verify_global_magick unit test

[masaori335]

Suppress the leak we're facing on PRB.

117/136 Test #114: verify_global_magick ...................***Failed    0.35 sec
[Jun 12 13:10:18.447] traffic_server NOTE: records parsing completed.
[Jun 12 13:10:18.447] traffic_server NOTE: /tmp/ats-quiche/etc/trafficserver/records.yaml finished loading
[Jun 12 13:10:18.460] traffic_server NOTE: Traffic Server is running unprivileged, not switching to user 'nobody'
NOTE: verifying plugin '/home/jenkins/workspace/Github_Builds/rocky/src/build/plugins/experimental/magick/magick.so'...
NOTE: verifying plugin '/home/jenkins/workspace/Github_Builds/rocky/src/build/plugins/experimental/magick/magick.so' Success

=================================================================
==6867==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 8 byte(s) in 1 object(s) allocated from:
    #0 0x7fbb3b08d9a7 in __interceptor_malloc (/lib64/libasan.so.6+0xb49a7)
    #1 0x7fbb31796dcc  (/opt/h3-tools-boringssl/boringssl/lib64/libssl.so+0x715dcc)

SUMMARY: AddressSanitizer: 8 byte(s) leaked in 1 allocation(s).

[bneradt]

I know @JosiahWI was investigating this. We weren't quite 100% sure yet why this leak was being reported and whether we could ignore it yet. We thought we probably could, but weren't sure.

Can you share your thoughts? Do you know why the leak is sometimes being reported?

[masaori335]

115/136 Test #114: verify_global_magick ...................***Failed    0.37 sec
[Jun 13 01:45:44.985] traffic_server NOTE: records parsing completed.
[Jun 13 01:45:44.985] traffic_server NOTE: /tmp/ats-quiche/etc/trafficserver/records.yaml finished loading
[Jun 13 01:45:44.989] traffic_server NOTE: Traffic Server is running unprivileged, not switching to user 'nobody'
NOTE: verifying plugin '/home/jenkins/workspace/Github_Builds/rocky/src/build/plugins/experimental/magick/magick.so'...
NOTE: verifying plugin '/home/jenkins/workspace/Github_Builds/rocky/src/build/plugins/experimental/magick/magick.so' Success

=================================================================
==6860==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 8 byte(s) in 1 object(s) allocated from:
    #0 0x7fe5b47859a7 in __interceptor_malloc (/lib64/libasan.so.6+0xb49a7)
    #1 0x7fe5aae96dcc  (<unknown module>)

SUMMARY: AddressSanitizer: 8 byte(s) leaked in 1 allocation(s).

With this PR, still a leak is detected from <unknown module> 😞

[JosiahWI]

I was unable to reproduce either of the leaks before and after this change on one of the CI docker environments.