(FACT-2824) Facter make ec2 metadata requests when on gce

[BogdanIrimie]

ec2_metadata fact tries to determine on what hypervisor or on what cloud provider it is running on. If it detecters aws, it will call the ec2 fact.

Problem:

• ec2_metadata fact calls the ec2 resolver when it detects kvm hypervisor, but there are other providers that use kvm, one example is gce.

Solution:

• improve the detection of hypervisor or cloud provider by adding the logic from virtual and dmi decoder

[puppetcla]

CLA signed by all contributors.

[BogdanIrimie]

Jenkins please test this on all