component/openssl: Expose also the path in openssl-output

Some profiles needs to extends the path with binaries location of provided
software.

component/openssl/buildout.cfg

@@ -53,6 +53,7 @@ stop-on-error = true
 update-command = ${:command}
 command = ${coreutils-output:test} -x ${:openssl}
 openssl = ${openssl:location}/bin/openssl
+bin = ${openssl:location}
 
 [openssl-1.0]
 recipe = slapos.recipe.cmmi