pass the machine_identity from the agent to the task

[chkeita]

The default value of the MachineIdentity was being passed to the task instead of the actual machine identity. This would cause all agent to have the id 00000000-0000-0000-0000-000000000000

[codecov-commenter]

Codecov Report

Merging #2662 (f2703f1) into main (38dfa66) will decrease coverage by 4.43%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2662      +/-   ##
==========================================
- Coverage   29.31%   24.88%   -4.44%     
==========================================
  Files         289      121     -168     
  Lines       35693    12512   -23181     
==========================================
- Hits        10463     3113    -7350     
+ Misses      25230     9399   -15831     

Impacted Files	Coverage Δ
src/agent/onefuzz-agent/src/debug.rs
src/agent/onefuzz-agent/src/main.rs
src/agent/onefuzz-agent/src/worker.rs
src/agent/onefuzz-task/src/local/common.rs
src/agent/onefuzz-task/src/local/coverage.rs
...c/agent/onefuzz-task/src/local/generic_analysis.rs
...ent/onefuzz-task/src/local/generic_crash_report.rs
.../agent/onefuzz-task/src/local/generic_generator.rs
src/agent/onefuzz-task/src/local/libfuzzer.rs
...t/onefuzz-task/src/local/libfuzzer_crash_report.rs
... and 158 more

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