MongoDBConnectionFactory is missing an else statement when URI is present

[elenavanengelenmaslova]

MongoDBConnectionFactory is missing an else statement when URI is present wit credentials. This results in replacement of already set mongoClient from URL

I'll create a PR

[elenavanengelenmaslova]

#336

[elenavanengelenmaslova]

the change was merged to master, any possibility of a new version in maven for org.teiid:spring-data-mongodb? thank you!