Allow to specify a tablespace for a database

* Tablespaces have to be created before the databases
* Add pillar examples
* Add tests

test/integration/default/serverspec/postgres_spec.rb

@@ -1,10 +1,21 @@
-require "serverspec"
+require 'serverspec'
 
-describe service("postgres") do
+describe service('postgresql') do
   it { should be_enabled }
   it { should be_running }
 end
 
-describe port("5432") do
+describe port('5432') do
   it { should be_listening }
 end
+
+describe file('/srv/my_tablespace') do
+  it { should be_directory }
+  it { should be_mode 700 }
+  it { should be_owned_by 'postgres' }
+  it { should be_grouped_into 'postgres' }
+end
+
+describe command('su - postgres -c "psql -qtc \"\l+ db2\""') do
+        its(:stdout) { should match(/db2.*localUser.*UTF8.*C.UTF-8.*C.UTF-8.*my_space/) }
+end