Problem : Log was not working on system. Unify logging method

[olethanh]

Restore the logging method using systemd and use it on all execution types. This method use the systemd journal library to open a file descriptor, which we pass to the subprocess. This should provide a performance boost since there is no python handling of the process output.

• Restored the method of logging in journald in Qemu
• Ported it to Firecracker hypervisor
• Now all Execution (program / instance qemu / firecracker) use the same unified logging method.
• Streaming Logging endpoint now works properly and return all logs.
• As per discussion: PRINT_SYSTEM_LOGS only affect Program execution, since we decided it made no sense or performance impact on Instances.
• When logs are disabled connect the Firecracker VM to /dev/null which should further improve performances.

[codecov]

Codecov Report

Attention: Patch coverage is 55.91398% with 41 lines in your changes missing coverage. Please review.

Project coverage is 59.27%. Comparing base (4060e00) to head (7a4ed4f).
Report is 2 commits behind head on main.

Files	Patch %	Lines
src/aleph/vm/utils/logs.py	30.00%	21 Missing ⚠️
src/aleph/vm/controllers/interface.py	41.66%	14 Missing ⚠️
src/aleph/vm/hypervisors/firecracker/microvm.py	72.72%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #644      +/-   ##
==========================================
+ Coverage   58.73%   59.27%   +0.53%     
==========================================
  Files          62       63       +1     
  Lines        5482     5419      -63     
  Branches      608      591      -17     
==========================================
- Hits         3220     3212       -8     
+ Misses       2122     2069      -53     
+ Partials      140      138       -2     

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[nesitor]

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