Move python-pip include to a class.

You can't have two different classes install the same package (FAIL)
But you can have two different classes include the same class, so
by encapsulating the "install pip" code into a module, we can safely
consume it across multiple modules.

Sometimes I really hate puppet.

Change-Id: I3467c52b6887298c1b4d01a29873c63edf0adfd3

manifests/init.pp

@@ -0,0 +1,12 @@
+class pip {
+
+  package { "python-all-dev":
+    ensure => present
+  }
+
+  package { "python-pip":
+    ensure => present,
+    require => Package[python-all-dev]
+  }
+
+}