Change:
- Make strategies behave consistently and return the empty string
instead of "UNKNOWN" (or "temporarystub") for the "before" value if
the permanent hostname file does not exist or could not be read.
- Switch to `with open()` instead of annoying exception handling code
(which was wrong and leaked file handles in several places). This
drops Python 2.4 support for this module.
- Updated porting guide since users could be relying on these former,
inconsistent values.
Signed-off-by: Rick Elrod <rick@elrod.me>
Change:
- Hostname strategies' get_*() methods should never write to the
filesystem. They are used in check_mode by default to determine if
there is any work to be done.
Test Plan:
- New unit tests to ensure that (at least when in check_mode) the get
methods don't ever call write.
Tickets:
- Fixes#66432
Signed-off-by: Rick Elrod <rick@elrod.me>
