Fixed build for tls v1.3 on openssl v1.0.2. Added CI check

[filipecosta90]

This PR:

• Fixes Error reported when executing command 'make' #235
• Introduces an CI check for openssl v1.0.2 build.

Reproduced via:

brew install rbenv/tap/openssl@1.0
autoreconf -ivf
PKG_CONFIG_PATH="/opt/homebrew/opt/openssl@1.0/lib/pkgconfig" ./configure
make

error:

(base) fco@fcos-Air memtier_benchmark % make
make  all-am
make[1]: Entering directory '/Users/fco/redislabs/memtier_benchmark'
  CXX      memtier_benchmark-memtier_benchmark.o
memtier_benchmark.cpp:328:16: warning: variable 'ignore' set but not used [-Wunused-but-set-variable]
        size_t ignore = fread(&R, sizeof(R), 1, f);
               ^
memtier_benchmark.cpp:1396:50: error: use of undeclared identifier 'SSL_OP_NO_TLSv1_3'
            SSL_CTX_set_options(cfg.openssl_ctx, SSL_OP_NO_TLSv1_3);
                                                 ^
1 warning and 1 error generated.
make[1]: *** [Makefile:751: memtier_benchmark-memtier_benchmark.o] Error 1
make[1]: Leaving directory '/Users/fco/redislabs/memtier_benchmark'
make: *** [Makefile:492: all] Error 2