Silence STDERR in Facter (#883)

* Silence STDERR in Facter

* Alter test for previous change ( Silence STDERR in Facter)

Author: dennisdegreef

lib/facter/mysqld_version.rb

@@ -1,5 +1,5 @@
 Facter.add("mysqld_version") do
   setcode do
-    Facter::Util::Resolution.exec('mysqld -V')
+    Facter::Util::Resolution.exec('mysqld -V 2>/dev/null')
   end
 end

spec/unit/facter/mysqld_version_spec.rb

@@ -8,7 +8,7 @@
   describe "mysqld_version" do
     context 'with value' do
       before :each do
-        Facter::Util::Resolution.stubs(:exec).with('mysqld -V').returns('mysqld  Ver 5.5.49-37.9 for Linux on x86_64 (Percona Server (GPL), Release 37.9, Revision efa0073)')
+        Facter::Util::Resolution.stubs(:exec).with('mysqld -V 2>/dev/null').returns('mysqld  Ver 5.5.49-37.9 for Linux on x86_64 (Percona Server (GPL), Release 37.9, Revision efa0073)')
       end
       it {
         expect(Facter.fact(:mysqld_version).value).to eq('mysqld  Ver 5.5.49-37.9 for Linux on x86_64 (Percona Server (GPL), Release 37.9, Revision efa0073)')