Rubocop: Enable Naming/VariableNumber

I would like to clean up our .rubocop.yaml to follow our standards. I
think enabling this cop makes sense, except for the
`determine_if_x86_64` method. rubocop prefers `determine_if_x8664` but
since `x86_64` is it's own name I disable the cop for this function.

.rubocop.yml

@@ -22,9 +22,6 @@ Naming/MethodParameterName:
 Naming/PredicateName:
   Enabled: false
 
-Naming/VariableNumber:
-  Enabled: false
-
 RSpec/DescribeClass:
   Exclude:
     - acceptance/fixtures/module/spec/**/*.rb

acceptance/fixtures/module/spec/acceptance/demo_spec.rb

@@ -22,15 +22,15 @@
   end
 
   it "is able to apply manifests" do
-    manifest_1 = "user {'foo':
+    manifest1 = "user {'foo':
           ensure => present,}"
-    manifest_2 = "user {'foo':
+    manifest2 = "user {'foo':
           ensure => absent,}"
-    manifest_3 = "user {'root':
+    manifest3 = "user {'root':
           ensure => present,}"
-    apply_manifest(manifest_1, :expect_changes => true)
-    apply_manifest(manifest_2, :expect_changes => true)
-    apply_manifest(manifest_3)
+    apply_manifest(manifest1, :expect_changes => true)
+    apply_manifest(manifest2, :expect_changes => true)
+    apply_manifest(manifest3)
   end
 
   describe service('sshd') do

lib/beaker/host/mac/pkg.rb

@@ -43,7 +43,7 @@ def upgrade_package(name, _cmdline_args = '')
 
   # Examine the host system to determine the architecture
   # @return [Boolean] true if x86_64, false otherwise
-  def determine_if_x86_64
+  def determine_if_x86_64 # rubocop:disable Naming/VariableNumber
     result = exec(Beaker::Command.new("uname -a | grep x86_64"), :expect_all_exit_codes => true)
     result.exit_code == 0
   end

lib/beaker/host/pswindows/pkg.rb

@@ -26,7 +26,7 @@ def uninstall_package(_name, _cmdline_args = '')
 
   # Examine the host system to determine the architecture, overrides default host determine_if_x86_64 so that wmic is used
   # @return [Boolean] true if x86_64, false otherwise
-  def determine_if_x86_64
+  def determine_if_x86_64 # rubocop:disable Naming/VariableNumber
     identify_windows_architecture.include?('64')
   end
 

lib/beaker/host/unix/pkg.rb

@@ -216,7 +216,7 @@ def upgrade_package(name, cmdline_args = '', opts = {})
 
   # Examine the host system to determine the architecture
   # @return [Boolean] true if x86_64, false otherwise
-  def determine_if_x86_64
+  def determine_if_x86_64 # rubocop:disable Naming/VariableNumber
     if self[:platform].include?('solaris')
       result = exec(Beaker::Command.new("uname -a | grep x86_64"), :accept_all_exit_codes => true)
       result.exit_code == 0

lib/beaker/host/windows/pkg.rb

@@ -31,7 +31,7 @@ def uninstall_package(name, _cmdline_args = '')
 
   # Examine the host system to determine the architecture, overrides default host determine_if_x86_64 so that wmic is used
   # @return [Boolean] true if x86_64, false otherwise
-  def determine_if_x86_64
+  def determine_if_x86_64 # rubocop:disable Naming/VariableNumber
     identify_windows_architecture.include?('64')
   end