Link with libssl

fixed build with openssl-1.1.x

Taken from Fedora
https://src.fedoraproject.org/rpms/openhpi/c/be77f5484b0206f8946a85b29424ea10bf863063

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Unknown

diff -up openhpi-3.6.1/ssl/Makefile.am.than openhpi-3.6.1/ssl/Makefile.am
--- openhpi-3.6.1/ssl/Makefile.am.than	2017-02-21 12:21:12.114814698 -0500
+++ openhpi-3.6.1/ssl/Makefile.am	2017-02-21 12:22:44.576454262 -0500
@@ -19,5 +19,5 @@ lib_LTLIBRARIES		= libopenhpi_ssl.la
 libopenhpi_ssl_la_SOURCES = oh_ssl.c oh_ssl.h
 
 libopenhpi_ssl_la_LDFLAGS = -version-info @HPI_LIB_VERSION@
-libopenhpi_ssl_la_LIBADD  = @CRYPTO_LIB@
+libopenhpi_ssl_la_LIBADD  = -lssl @CRYPTO_LIB@