Change file extension of install template

manifests/install.pp

@@ -87,7 +87,7 @@ class matlab::install(      # $namevar matlab release version
     group   => root,
     mode    => '0600',  # u=rw,go=r
     require => Mount["matlab_mount.${name}"],
-    content => template('matlab/installer_input.txt.erb'),
+    content => template('matlab/installer_input.txt.epp'),
     alias   => "matlab_input.${name}",
   }