bfd: use vnet crypto

Type: improvement

Change-Id: I873a99c1258a97ed5ed195b9756e8302f865e7f0
Signed-off-by: Klement Sekera <ksekera@cisco.com>
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ebf03bd..1730e7b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -176,7 +176,7 @@
 if(VPP_HOST_TOOLS_ONLY)
   set(SUBDIRS tools/vppapigen cmake)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
-  find_package(OpenSSL REQUIRED)
+  find_package(OpenSSL)
   set(SUBDIRS
     vppinfra svm vlib vlibmemory vlibapi vnet vpp vat vat2 vcl plugins
     vpp-api tools/vppapigen tools/g2 tools/perftool cmake pkg