* set up a mock local command template to run when testing
 * patch mock command into the templer.localcommands distro at test setup, remove it at teardown.
 * register the local command for the 'basic_namespace' template so we can test depending only on templer.core.
 * rework 'available' test to use the new, locally available localcommand
 * add template directory structure for our new localcommand