Style fixes so "make pep8" is clean.

library/setup

@@ -853,29 +853,29 @@ class AIX(Hardware):
         self.facts['firmware_version'] = data[1].strip('IBM,')
 
 class Darwin(Hardware):
-   """
-   Darwin-specific subclass of Hardware.  Defines memory and CPU facts:
-   - processor
-   - processor_cores
-   - memtotal_mb
-   - memfree_mb
-   - model
-   - osversion
-   - osrevision
-   """
-   platform = 'Darwin'
+    """
+    Darwin-specific subclass of Hardware.  Defines memory and CPU facts:
+    - processor
+    - processor_cores
+    - memtotal_mb
+    - memfree_mb
+    - model
+    - osversion
+    - osrevision
+    """
+    platform = 'Darwin'
 
-   def __init__(self):
+    def __init__(self):
         Hardware.__init__(self)
 
-   def populate(self):
+    def populate(self):
         self.sysctl = self.get_sysctl()
         self.get_mac_facts()
         self.get_cpu_facts()
         self.get_memory_facts()
         return self.facts
 
-   def get_sysctl(self):
+    def get_sysctl(self):
         rc, out, err = module.run_command(["/usr/sbin/sysctl", "hw", "machdep", "kern"])
         if rc != 0:
             return dict()
@@ -886,16 +886,16 @@ class Darwin(Hardware):
                 sysctl[key] = value.strip()
         return sysctl
 
-   def get_mac_facts(self):
+    def get_mac_facts(self):
         self.facts['model'] = self.sysctl['hw.model']
         self.facts['osversion'] = self.sysctl['kern.osversion']
         self.facts['osrevision'] = self.sysctl['kern.osrevision']
 
-   def get_cpu_facts(self):
+    def get_cpu_facts(self):
         self.facts['processor'] = self.sysctl['machdep.cpu.brand_string']
         self.facts['processor_cores'] = self.sysctl['machdep.cpu.core_count']
 
-   def get_memory_facts(self):
+    def get_memory_facts(self):
         self.facts['memtotal_mb'] = long(self.sysctl['hw.memsize']) / 1024 / 1024
         self.facts['memfree_mb'] = long(self.sysctl['hw.usermem']) / 1024 / 1024