SiliconLabsGH-14: Enable testing by default

More to be tested

Bug-SiliconLabs: UIC-3082
Bug-GitHub: rzr#3
Origin: https://github.com/rzr/UnifySDK/tree/GH-14/UIC-3082/phcoval/main
Forwarded: SiliconLabs#26
Signed-off-by: Philippe Coval <philippe.coval@silabs.com>
(cherry picked from commit a3fa1c8)

Author: rzr

helper.mk

@@ -156,7 +156,7 @@ zpc/build: zpc/configure build
 zpc/test: ${build_dir}/applications/zpc/components/zwave_command_classes/test/
 	ctest --test-dir ${<}
 
-zpc/default: zpc/configure zpc/build
+zpc/default: zpc/configure zpc/build zpc/test
 	@date -u
 
 ### @rootfs is faster than docker for env check