DataSourcePublicMetrics does not find data sources in parent context

[shalom938]

we have a context hierarchy and the data sources are in a parent context.
DataSourcePublicMetrics retrieves DataSource's like that:

for (Map.Entry<String, DataSource> entry : this.applicationContext
                .getBeansOfType(DataSource.class).entrySet()) {

it does not find the DataSource's in parent contexts,
I had to copy the code and change this line to :

for (Map.Entry<String, DataSource> entry : BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext.getBeanFactory(),DataSource.class).entrySet()) {

[snicoll]

See #5188

[wilkinsona]

This problem has been superseded by the move to Micrometer-based metrics in Boot 2.0