### Environment

* Dubbo version: 2.7.3
* Operating System version: win 10
* Java version: 1.8

系统启动时报
Caused by: java.lang.IllegalArgumentException: Unsupported generic type false
	at org.apache.dubbo.config.ServiceConfig.setGeneric(ServiceConfig.java:1015)

这个错误只有在2.7.3的时候存在，在使用2.7.2的时候没有
@Parameter(key = Constants.RECONNECT_KEY)
    public String getReconnect() {
        return reconnect;
    }
    public void setReconnect(String reconnect) {
        this.reconnect = reconnect;
    }
    @Parameter(key = CLUSTER_STICKY_KEY)
    public Boolean getSticky() {
        return sticky;
    }
    public void setSticky(Boolean sticky) {
        this.sticky = sticky;
    }
    public String getVersion() {
        return version;
    }
    public void setVersion(String version) {
        checkKey(VERSION_KEY, version);
        this.version = version;
    }
    public String getGroup() {
        return group;
    }
    public void setGroup(String group) {
        checkKey(GROUP_KEY, group);
        this.group = group;
    }
}