[Integration Test Framework] does account track of the instance provisioner

[AndersonQ]

When the test framework saves the instance on the runner's state it does not account for the instance provisioner. That causes the runner to reuse an existing instance multipass instance even though ogc is selected as instance provisioner and vice versa

How to reproduce:

1. Make sure there is not existing instances, run: mage integration:clean
2. Run a test using multipass: AGENT_VERSION=8.12.0-SNAPSHOT AGENT_KEEP_INSTALLED=true INSTANCE_PROVISIONER="multipass" SNAPSHOT=true TEST_PLATFORMS="linux/amd64" mage integration:single TestFleetAirGapedUpgrade
3. Everything works, a multipass instance is created.
4. Run the same test using ogc: AGENT_VERSION=8.12.0-SNAPSHOT AGENT_KEEP_INSTALLED=true INSTANCE_PROVISIONER="ogc" SNAPSHOT=true TEST_PLATFORMS="linux/amd64" mage integration:single TestFleetAirGapedUpgrade
5. The multipass instance is reused

[elasticmachine]

Pinging @elastic/elastic-agent (Team:Elastic-Agent)