(maint) Fix spec test to catch unexpected logging in fail_pending_vm.

spec/unit/pool_manager_spec.rb

@@ -275,13 +275,15 @@
 
     it 'takes no action if VM is not cloning' do
       redis_connection_pool.with do |redis|
+        expect(logger).to_not receive(:log)
         expect(subject.fail_pending_vm(vm, pool, timeout, timeout_notification, redis)).to eq(true)
       end
     end
 
     it 'takes no action if VM is within timeout' do
       redis_connection_pool.with do |redis|
         redis.hset("vmpooler__vm__#{vm}", 'clone',Time.now.to_s)
+        expect(logger).to_not receive(:log)
         expect(subject.fail_pending_vm(vm, pool, timeout, timeout_notification, redis)).to eq(true)
         expect(redis.sismember("vmpooler__pending__#{pool}", vm)).to be(true)
       end