Pass --no-binary=:all: to pip install when running on Ubuntu Xenial

Installing graphite with pip >= 7.0.0 causes it to install to the wrong
location unless you pass it the `--no-binary=:all:` option. (See [pip install
of 0.9.15 = No $GRAPHITE_ROOT/webapp/graphite exists][1].) As Ubuntu Xenial
includes pip 8.1 by default, passing this option is necessary.

Note that passing install options to pip [requires Puppet v4.1+][2] so this fix
will not work on systems using older versions of Puppet. (Even Ubuntu Xenial
only includes Puppet 3.8 in its package repositories, which is unfortunate.)

Other workarounds are possible, including [downgrading to pip 6.1.1 before
installing Graphite][3], or [installing from a tarball with a name that doesn't
include all of the letters of package name][4] but this solution seems like
the most straighforward one.

[1]: graphite-project/graphite-web#1508 (comment)
[2]: puppetlabs/puppet@c2697c6
[3]: #309 (comment)
[4]: #309 (comment)

manifests/install.pp

@@ -91,17 +91,26 @@
     ,
   }
   , {
-    provider => $gr_pkg_provider,
-    require  => $gr_pkg_require,
+    provider        => $gr_pkg_provider,
+    require         => $gr_pkg_require,
+    install_options => $gr_pkg_provider ? {
+      'pip'   => $::graphite::params::pip_install_options,
+      default => undef,
+    },
   }
   )
 
   if $::graphite::gr_django_pkg {
+    $django_install_options = $::graphite::gr_django_provider ? {
+      'pip'   => $::graphite::params::pip_install_options,
+      default => undef,
+    }
     package { $::graphite::gr_django_pkg:
-      ensure   => $::graphite::gr_django_ver,
-      provider => $::graphite::gr_django_provider,
-      source   => $::graphite::gr_django_source,
-      require  => $gr_pkg_require,
+      ensure          => $::graphite::gr_django_ver,
+      provider        => $::graphite::gr_django_provider,
+      source          => $::graphite::gr_django_source,
+      require         => $gr_pkg_require,
+      install_options => $django_install_options,
     }
   }
 

manifests/params.pp

@@ -92,21 +92,24 @@
 
       case $::lsbdistcodename {
         /squeeze|wheezy|precise/: {
-          $apache_24          = false
-          $graphitepkgs       = union($common_os_pkgs, ['python-cairo',])
-          $libpath            = "/usr/lib/python${pyver}/dist-packages"
+          $apache_24           = false
+          $graphitepkgs        = union($common_os_pkgs, ['python-cairo',])
+          $libpath             = "/usr/lib/python${pyver}/dist-packages"
+          $pip_install_options = undef
         }
 
         /jessie|trusty|utopic|vivid|wily/: {
-          $apache_24          = true
-          $graphitepkgs       = union($common_os_pkgs, ['python-cairo',])
-          $libpath            = "/usr/lib/python${pyver}/dist-packages"
+          $apache_24           = true
+          $graphitepkgs        = union($common_os_pkgs, ['python-cairo',])
+          $libpath             = "/usr/lib/python${pyver}/dist-packages"
+          $pip_install_options = undef
         }
 
         /xenial/: {
-          $apache_24          = true
-          $graphitepkgs       = union($common_os_pkgs, ['python-cairo',])
-          $libpath            = "/usr/local/lib/python${pyver}/dist-packages"
+          $apache_24           = true
+          $graphitepkgs        = union($common_os_pkgs, ['python-cairo',])
+          $libpath             = "/usr/local/lib/python${pyver}/dist-packages"
+          $pip_install_options = [{'--no-binary' => ':all:'}]
         }
 
         default: {
@@ -184,6 +187,8 @@
       }
 
       $libpath = "/usr/lib/python${pyver}/site-packages"
+
+      $pip_install_options = undef
     }
 
     default: {