Tolerate invalid gating.yaml files
    
    Let's tollerate invalid gating.yaml files when they have:
    - malformed yaml syntax
    - RemoteRule inside the gating.yaml
    If a misconfigured gating.yaml file is found, Greenwave checks for
    waivers with testcase == "invalid-gating-yaml", if found the error
    is "waived". Otherwise it will return policies_satisfied = False.