add strict openssl version dep

/usr/share/ruby/2.0/rubygems/core_ext/kernel_require.rb:55:in `require':
/usr/lib64/ruby/2.0/openssl.so: undefined symbol: TLSv1_2_method - /usr/lib64/ruby/2.0/openssl.so (LoadError)
        from /usr/share/ruby/2.0/rubygems/core_ext/kernel_require.rb:55:in `require'
        from /usr/share/ruby/2.0/openssl.rb:17:in `<top (required)>'