Added path as Exec resources require either fully qualified paths or …

…a path in which to look for the executable

manifests/init.pp

@@ -40,6 +40,7 @@
             ensure => installed,
           }
           exec { 'pip-glances':
+            path    => '/usr/bin:/bin:/usr/sbin:/sbin',
             command => 'pip install glances',
             creates => '/usr/local/bin/glances',
             require => Package['python-pip'],