Cursor demo PR: Add Appsec SSI tests

[robertomonteromiguel]

Motivation

Original PR: #4854
Cursor iterations:

- Iteration 1:

Validate the auto activation of Appsec (AAP) using AWS SSI in different environments.
I want to create 3 aws ssi scenarios, that are very similar to the aws ssi profiling scenario, but in this case instead of adding the evn variable "DD_PROFILING_ENABLED=auto",we will add the variable
"DD_APPSEC_ENABLED=true". The new appsec scenarios are:
SIMPLE_AUTO_INJECTION_APPSEC (feature 478)
HOST_AUTO_INJECTION_INSTALL_SCRIPT_APPSEC (feature 479)
CONTAINER_AUTO_INJECTION_INSTALL_SCRIPT_APPSEC (feature 480)

The appsec test is verifying that the received span contain the metric _dd.appsec.enabled set to 1 and the meta tag appsec.event set to true.

- Iteration 2:

but the method "_test_install" of the AutoInjectBaseTest class, doesn't accept the parameter appsec=true and it is not executing the validation of : Metric _dd.appsec.enabled set to 1 and Meta tag appsec.event set to true

- Iteration 3:

In the method _validate_appsec_trace you are validating correctly the metrics for appsec, but you are not validating the meta appsec event. This is the validation:
meta["appsec.event"] == true

Changes

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Reviewer checklist

• If PR title starts with [<language>], double-check that only <language> is impacted by the change
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