use corretly log function

slapos/recipe/download.py

@@ -73,7 +73,7 @@ class Recipe(object):
           m.update(option_signature)
         shared = os.path.join(shared, m.hexdigest())
         self._parts = parts = shared
-        log.info('shared directory  %s set for %s' % (shared, name))
+        log.info('shared directory  %s set for %s', shared, name)
       else:
         self._parts = parts = os.path.join(buildout_section['parts-directory'],
           name)
@@ -89,7 +89,7 @@ class Recipe(object):
     parts = self._parts
     log = logging.getLogger(self._name)
     if self._shared:
-      log.info('Checking whether package is installed at shared path: %s' % destination)
+      log.info('Checking whether package is installed at shared path: %s', destination)
       if os.path.exists(destination):
         log.info('This shared package has been installed by other package')
         return []

slapos/recipe/downloadunpacked.py

@@ -70,7 +70,7 @@ class Recipe:
           m.update(option_signature)
         shared = os.path.join(shared, m.hexdigest())
         self.parts = shared
-        self.logger.info('shared directory  %s set for %s' % (shared, name))
+        self.logger.info('shared directory  %s set for %s', shared, name)
       else:
         self.parts = os.path.join(self.buildout['buildout']['parts-directory'],
             self.name)
@@ -100,7 +100,7 @@ class Recipe:
 
   def install(self):
     if self.shared:
-      self.logger.info('Checking whether package is installed at shared path : %s' % self.destination)
+      self.logger.info('Checking whether package is installed at shared path : %s', self.destination)
       if os.path.exists(self.destination):
         self.logger.info('This shared package has been installed by other package')
         return []