request_key/request_key01.c: add new testcase

The testcase checks basic functionality of the request_key(2).
request_key(2) asks the kernel to find a key which matches the
specified description. If successful, it attaches it to the
nominated keyring and returns its serial number.

Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/configure.ac b/configure.ac
index 2fb1ebc..7b98332 100644
--- a/configure.ac
+++ b/configure.ac
@@ -185,5 +185,6 @@
 LTP_CHECK_PREADV
 LTP_CHECK_PWRITEV
 LTP_CHECK_EPOLL_PWAIT
+LTP_CHECK_KEYUTILS_SUPPORT
 
 AC_OUTPUT