Fix IBM tests - Chef cache path behavior seems to have changed and setting it is not honored.

Author: erichelgeson

spec/ibm_spec.rb

@@ -15,11 +15,11 @@
   end
 
   it 'creates an installer.properties file' do
-    expect(chef_run).to create_template('/var/chef/cache/installer.properties')
+    expect(chef_run).to create_template(Chef::Config[:file_cache_path] + '/installer.properties')
   end
 
   it 'downloads the remote jdk file' do
-    expect(chef_run).to create_remote_file('/var/chef/cache/ibm-java.bin')
+    expect(chef_run).to create_remote_file(Chef::Config[:file_cache_path] + '/ibm-java.bin')
   end
 
   it 'runs the installer' do

spec/ibm_tar_spec.rb

@@ -11,7 +11,7 @@
   end
 
   it 'downloads the remote jdk file' do
-    expect(chef_run).to create_remote_file('/var/chef/cache/ibm-java.tar.gz')
+    expect(chef_run).to create_remote_file(Chef::Config[:file_cache_path] + '/ibm-java.tar.gz')
   end
 
   it 'create java_home directory' do