slowhttptest: fix two build issues (fetch and configure)
slowhttptest: fix two build issues (fetch and configure)

package cannot be fetch using exisiting SHA, updated to the latest
added openssl dependency to fix
...
checking for SSL_library_init in -lssl... no
configure: error: OpenSSL-devel is missing

Signed-off-by: Armin Kuster <525edcd226fb27e7f47fbb319a38fe989c677548@gmail.com>

akuster/meta-kali,akuster/meta-kali