libwebsocket-dev doesn't expose openssl dependency by its .pc files,
even if it is necessary to build properly.
this patch fix them to expose it.
Change-Id: If4e3f3a21759b9e3b23cc26386e428cc4c7d151c
Name: libwebsockets
Description: Websockets server and client library
Version: ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}
+Requires: openssl1.1
Libs: -L\${libdir} -lwebsockets
Cflags: -I\${includedir}"
Name: libwebsockets_static
Description: Websockets server and client static library
Version: ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}
+Requires: openssl1.1
Libs: -L\${libdir} -lwebsockets_static
Libs.private: