add retry to find_instance_page

Had a issue deploying a image on cloud provider and it not showing up
right a way
updated clone_template script for all providers
Merge pull request #218 from dajohnso/clone_tmpl

updated clone_template script for all providers
Merge pull request #220 from dajohnso/page_retry

add retry to find_instance_page
Merge pull request #209 from psav/flakey-goodness

Flakey goodness
Added delay parameter to wait_for function

Added delay parameter to wait_for function
Added wait_for test