Merge pull request #1051 from sfromm/wile-e-coyote

Add pkg_mgr fact to setup (take 2)

library/setup

@@ -54,6 +54,13 @@ class Facts(object):
                     '/etc/vmware-release': 'VMwareESX' }
     SELINUX_MODE_DICT = { 1: 'enforcing', 0: 'permissive', -1: 'disabled' }
 
+    # A list of dicts.  If there is a platform with more than one
+    # package manager, put the preferred one last.  If there is an
+    # ansible module, use that as the value for the 'name' key.
+    PKG_MGRS = [ { 'path' : '/usr/bin/yum',     'name' : 'yum' },
+                 { 'path' : '/usr/bin/apt-get', 'name' : 'apt' },
+                 { 'path' : '/usr/bin/zypper',  'name' : 'zypper' } ]
+
     def __init__(self):
         self.facts = {}
         self.get_platform_facts()
@@ -61,6 +68,7 @@ class Facts(object):
         self.get_cmdline()
         self.get_public_ssh_host_keys()
         self.get_selinux_facts()
+        self.get_pkg_mgr_facts()
 
     def populate(self):
         return self.facts
@@ -133,6 +141,12 @@ class Facts(object):
         else:
             self.facts['ssh_host_key_rsa_public'] = rsa.split()[1]
 
+    def get_pkg_mgr_facts(self):
+        self.facts['pkg_mgr'] = 'unknown'
+        for pkg in Facts.PKG_MGRS:
+            if os.path.exists(pkg['path']):
+                self.facts['pkg_mgr'] = pkg['name']
+
     def get_selinux_facts(self):
         if not HAVE_SELINUX:
             self.facts['selinux'] = False