Install yappi and objgraph packages

If yappi is installed, we can get nodepool to dump thread info.
If objgraph is installed, we can get object counts to help find
memory leaks (which we seem to have).

Change-Id: I88e79da77fb03c6d522f48baa19d55fd69968528

manifests/init.pp

@@ -120,11 +120,29 @@ class nodepool (
 
   if ($python_version == 3) {
     include ::pip::python3
+    $pip_provider = pip3
     $pip_command = 'pip3'
   } else {
+    $pip_provider = openstack_pip
     $pip_command = 'pip'
   }
 
+  if ! defined(Package['yappi']) {
+    package { 'yappi':
+      ensure   => present,
+      provider => $pip_provider,
+      require  => Class['pip'],
+    }
+  }
+
+  if ! defined(Package['objgraph']) {
+    package { 'objgraph':
+      ensure   => present,
+      provider => $pip_provider,
+      require  => Class['pip'],
+    }
+  }
+
   exec { 'install_nodepool' :
     command     => "${pip_command} install -U /opt/nodepool",
     path        => '/usr/local/bin:/usr/bin:/bin/',
@@ -138,6 +156,8 @@ class nodepool (
       Package['libxml2-dev'],
       Package['libxslt1-dev'],
       Package['libgmp-dev'],
+      Package['objgraph'],
+      Package['yappi'],
     ],
     timeout     => 1000,
   }