CMake: get rid off GetGitRevisionDescription Cmake include. Use "git rev-parse HEAD" and "git describe --long" as external programs instead.

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
Revert "Use long form clientid to persist clientid on storage for V4 recovery."

This reverts commit 6a12202976ba8106c1f79249aa8f3d31bbe7933c.

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>