fix(agent): include GlobalTimeout during allocate phase

[rene-oromtz]

Description

This PR adds a a schema validation for allocate_data.

This PR adds GlobalTimeout to the allocate phase, without a proper parent job id, the agent can wait indefinitively in the allocate phase until job is manually cancelled. Ideally, the best approach is to enforce the schema in server side but for now, just adding this timeout should allow no agent exceeds the allowed amount of time.

The rationale on not including a schema on server side is that there seems to be cases where users that rely on Spread testing are using the allocate phase to fetch for the IP and then use that IP to run manual tests, this is not ideal as the reserve stage should serve for that purpose but we should at least give a proper warning before enforcing the restriction on server side.

Resolved issues

Resolves #799
Resolves CERTTF-713

Documentation

Web service API changes

Tests

Added couple of unit tests for testing agent exits on allocate status

[codecov]

Codecov Report

❌ Patch coverage is 91.30435% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.07%. Comparing base (9cbb26f) to head (d104f1d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #928      +/-   ##
==========================================
+ Coverage   73.85%   74.07%   +0.21%     
==========================================
  Files         108      108              
  Lines       10313    10322       +9     
  Branches      886      888       +2     
==========================================
+ Hits         7617     7646      +29     
+ Misses       2508     2488      -20     
  Partials      188      188              

Flag	Coverage Δ		*Carryforward flag
agent	76.16% <90.90%> (+1.75%)	⬆️
cli	89.56% <ø> (ø)		Carriedforward from 8a3e71c
device	59.86% <100.00%> (ø)
server	87.85% <ø> (ø)		Carriedforward from 8a3e71c

*This pull request uses carry forward flags. Click here to find out more.

Components	Coverage Δ
Agent	76.16% <90.90%> (+1.75%)	⬆️
CLI	89.56% <ø> (ø)
Common	∅ <ø> (∅)
Device Connectors	59.86% <100.00%> (ø)
Server	87.85% <ø> (ø)

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