samples/tests: Ensure test/sample names are unique

Ensure that all tests and samples start with 'sample.rust' or
'test.rust' to avoid conflict with names in the main Zephyr tree.

Signed-off-by: David Brown <[email protected]>

Author: d3zd3z

samples/blinky/sample.yaml

@@ -10,7 +10,7 @@ common:
     - qemu_riscv64
     - nrf52840dk/nrf52840
 tests:
-  sample.basic.blinky:
+  sample.rust.basic.blinky:
     tags:
       - LED
       - gpio