Be flexible in what we accept for script.delay configuration. (#1738)

Accept delay configuration even when someone forgets to indent the time

specification.



Also removed 'weeks' and 'microseconds' from acceptable delay values.

There is a new homeassistant release every 2 weeks and running scripts

are not persisting across restarts. And there is still the option of

using (weeks*7) days if the long delay is really necessary.



And if someone really depends on microsecond delay precision we are

unlikely to be able to provide this accuracy, even milliseconds is

suspect for that matter but will at least allow us to specify some

subsecond delay.

homeassistant/helpers/config_validation.py

@@ -16,6 +16,7 @@ from homeassistant.util import slugify
 # Home Assistant types
 byte = vol.All(vol.Coerce(int), vol.Range(min=0, max=255))
 small_float = vol.All(vol.Coerce(float), vol.Range(min=0, max=1))
+positive_int = vol.All(vol.Coerce(int), vol.Range(min=0))
 latitude = vol.All(vol.Coerce(float), vol.Range(min=-90, max=90),
                    msg='invalid latitude')
 longitude = vol.All(vol.Coerce(float), vol.Range(min=-180, max=180),