datasources and resource-adapter subsystems: credential-reference and password should be mutually exclusive

            "password" => {
                "type" => STRING,
                "description" => "Specifies the password used when creating a new connection",
                "expressions-allowed" => true,
                "required" => false,
                "nillable" => true,
                "requires" => ["user-name"],
                "min-length" => 1L,
                "max-length" => 2147483647L,
                "access-constraints" => {"sensitive" => {
                    "credential" => {"type" => "core"},
                    "data-source-security" => {"type" => "datasources"}
                }},
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "no-services"
            },
          "credential-reference" => {
                "type" => OBJECT,
                "description" => "Credential (from Credential Store) to authenticate on data source",
                "expressions-allowed" => false,
                "required" => false,
                "nillable" => true,
                "capability-reference" => "org.wildfly.security.credential-store",
                "access-constraints" => {"sensitive" => {
                    "credential" => {"type" => "core"},
                    "data-source-security" => {"type" => "datasources"}
                }},
                "value-type" => {
                    "store" => {
                        "type" => STRING,
                        "description" => "The name of the credential store holding the alias to credential",
                        "expressions-allowed" => false,
                        "required" => false,
                        "nillable" => true,
                        "min-length" => 1L,
                        "max-length" => 2147483647L
                    },
                    "alias" => {
                        "type" => STRING,
                        "description" => "The alias which denotes stored secret or credential in the store",
                        "expressions-allowed" => false,
                        "required" => false,
                        "nillable" => true,
                        "min-length" => 1L,
                        "max-length" => 2147483647L
                    },
                    "type" => {
                        "type" => STRING,
                        "description" => "The type of credential this reference is denoting",
                        "expressions-allowed" => false,
                        "required" => false,
                        "nillable" => true,
                        "min-length" => 1L,
                        "max-length" => 2147483647L
                    },
                    "clear-text" => {
                        "type" => STRING,
                        "description" => "Secret specified using clear text (check credential store way of supplying credential/secrets to services)",
                        "expressions-allowed" => false,
                        "required" => false,
                        "nillable" => true,
                        "min-length" => 1L,
                        "max-length" => 2147483647L
                    }
                },
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "all-services"
            }