Specifies the certificate storage where server certificates are stored.
This property defines the certificate storage where
TElClientServerIndySSLIOHandlerSocket should take certificate
to send to the client. As different cipher suites require different types of certificates,
it may be impossible to use some cipher suites due to absence of certificate of
needed type in the storage. If there are no certificates in CertStorage, it's impossible
to use any cipher suites, except DH_ANON_
Note, that the certificates in ServerCertStorage must have corresponding private keys. It is possible to put several certificates without private keys which create a certificate chain, but the ending certificate of the chain must have the private key anyway.