lower version, for example 2.6.8
```properties
dubbo.provider.version=1.0
```

2.7.6 failed to recognize the provider url with 'default.version=1.0' key,  it only takes 'version.1.0' into consideration.

public int getMethodIntParameter(String method, String key, int defaultValue) {
        return getMethodParameter(method, key, defaultValue);
    }
    /**
     * @see #getMethodPositiveParameter(String, String, int)
     * @deprecated Replace to <code>getMethodPositiveParameter(String, String, int)</code>
     */
    @Deprecated
    public int getMethodPositiveIntParameter(String method, String key, int defaultValue) {
        return getMethodPositiveParameter(method, key, defaultValue);
    }
    /**
     * @see #getMethodParameter(String, String, boolean)
     * @deprecated Replace to <code>getMethodParameter(String, String, boolean)</code>
     */
    @Deprecated
    public boolean getMethodBooleanParameter(String method, String key) {
        return getMethodParameter(method, key, false);
    }
    /**
     * @see #getMethodParameter(String, String, boolean)
     * @deprecated Replace to <code>getMethodParameter(String, String, boolean)</code>
     */
    @Deprecated
    public boolean getMethodBooleanParameter(String method, String key, boolean defaultValue) {
        return getMethodParameter(method, key, defaultValue);
    }
    public Configuration toConfiguration() {
        InmemoryConfiguration configuration = new InmemoryConfiguration();
        configuration.addProperties(parameters);