resiliencytest: adapt abstract test suite to work with erp5testnode.
resiliencytest: adapt abstract test suite to work with a single clone.
slaprunner resiliencytest: simplify __init__.
slaprunner resiliencytest: use backend url for monitor.
resiliency test: update documentation.
resiliency tests: send log to erp5 master.
KVM resiliency test: use test framework.

Allows to not have to backport all changes to KVM test suite.