(maint) Fix CI

This is still not working as expected: on FreeBSD the processors facts
are built by running Facter::Resolvers::Bsd::Processors and
Facter::Resolvers::Freebsd::Processors, the later being supposed to
inherit from the former, I would not expect this to happen.

I did not find an example of provider that inherits from another
provider, and I guess that what I did is not the proper way of doing it.

Maybe using two distinct and independant providers for processors speed
for BSD and FreeBSD, and another one for the code common to all BSD
makes more sense, but I am not sure how to aggregate the os-dependent
speed into the processors fact.

spec/facter/resolvers/freebsd/processors_spec.rb

@@ -4,9 +4,21 @@
   subject(:resolver) { Facter::Resolvers::Freebsd::Processors }
 
   let(:log_spy) { instance_spy(Facter::Log) }
+  let(:logicalcount) { 2 }
+  let(:models) do
+    ['Intel(r) Xeon(r) Gold 6138 CPU @ 2.00GHz', 'Intel(r) Xeon(r) Gold 6138 CPU @ 2.00GHz']
+  end
   let(:speed_expected) { 2_592_000_000 }
 
   before do
+    allow(Facter::Bsd::FfiHelper)
+      .to receive(:sysctl)
+      .with(:uint32_t, [6, 3])
+      .and_return(logicalcount)
+    allow(Facter::Bsd::FfiHelper)
+      .to receive(:sysctl)
+      .with(:string, [6, 2])
+      .and_return(models[0])
     allow(Facter::Freebsd::FfiHelper)
       .to receive(:sysctl_by_name)
       .with(:uint32_t, 'hw.clockrate')