cdp: fix cmake build

- fix runtime Error relocating cdp.so: TLS_client_method: symbol not found
  when building with cmake

src/modules/cdp/CMakeLists.txt

@@ -3,5 +3,6 @@ file(GLOB MODULE_SOURCES "*.c")
 add_library(${module_name} SHARED ${MODULE_SOURCES})
 
 find_package(LibXml2 REQUIRED)
+find_package(OpenSSL REQUIRED)
 
-target_link_libraries(${module_name} PRIVATE LibXml2::LibXml2)
+target_link_libraries(${module_name} PRIVATE LibXml2::LibXml2 OpenSSL::SSL)