Move log dir creation location

in ab4fa87 we removed the creation of the log directory
In production / appliances, we don't want an actual
log directory.

Unfortunatly the current solution caused issues for
plugins

Instead, the log creation was moved to the environment setup.
So all plugins travis builds will get the benefit

ManageIQ#17663

.travis.yml

@@ -24,7 +24,6 @@ matrix:
 addons:
   postgresql: '9.5'
 before_install:
-- mkdir ${TRAVIS_BUILD_DIR}/log
 - source ${TRAVIS_BUILD_DIR}/tools/ci/before_install.sh
 before_script:
 - bundle exec rake test:$TEST_SUITE:setup

lib/manageiq/environment.rb

@@ -39,6 +39,9 @@ def self.ensure_config_files
         puts "Copying #{file} from template..."
         FileUtils.cp(APP_ROOT.join(source), file)
       end
+
+      logdir = APP_ROOT.join("log")
+      Dir.mkdir(logdir) unless Dir.exist?(logdir)
     end
 
     def self.while_updating_bower