Use `echo` + `sed` to add/remove options in postgresql.conf of
master node and standby node. This method could completely restore
the SSL related options in postgresql.conf. The imperfect point is
this way may overwrite the existing certificates and keys under
data directory.

We use newly created certificates and keys, instead of certificates
in src/test/ssl/ssl. Because there some fields in those certificates
are missing in the test. `sslinfo` will only be compiled and packaged
when `--with-openssl` option is enabled in configuration, otherwise
`sslinfo` is omitted.

(cherry picked from commit 508bdb11)