feat(apisix): support apisix lower than 3.8

[bzp2010]

Description

Try to support APISIX versions lower than 3.8.1

A subset of the E2E tests are now tested on all versions from 3.2.2 - 3.11.0, which will facilitate inter-migration between versions. (It should only be used for upgrades, not downgrades. There is no reason for you to do this, please don't.)

The older the version the more limitations there will be, so it is highly recommended to start on the latest releases and upgrade them regularly!

For those of you who are stuck on older versions, you should stop using them, they will never be maintained and it's almost impossible to get technical support, so it's time to upgrade.

Known compatibility issues:

• The name field will be lost when synchronizing stream routes in versions below 3.8.0. This is because APISIX does not support this field and the schema restricts adding fields that are not predefined.
• The stream route synchronizations in versions below 3.8.0 are not supported, they will indeed be skipped. This is because the stream route cannot be associated with a service in those versions.

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible