Bump to >2.4.0 yields DocumentClientException/ Request url is invalid.

**Describe the bug**
I tried to update a quite old service to 2.6.10 and using the builder to construct an AsyncDocumentClient immediately throws a DocumentClientException with message _Request url is invalid_. The exactly same connection string/ endpoint-key-pair is used as before. Downgrading to 2.3 (or 2.2 or 2.1) makes it disappear.

**To Reproduce**
The following code creates the client:

```
// endpointKeyPair contains the values from ConnectionString, AccountEndpoint=getFirst() resp. AccountKey=getSecond
new AsyncDocumentClient.Builder()
.withMasterKeyOrResourceToken(endpPointKeyPair.getSecond())
.withServiceEndpoint(endpPointKeyPair.getFirst())
.withConnectionPolicy(ConnectionPolicy.GetDefault())
.withConsistencyLevel(ConsistencyLevel.ConsistentPrefix).build();
```

**Expected behavior**
AsyncDocumentClient is created without an exception/ as in versions before 2.4.0.

**Actual behavior**
throws DocumentClientException, clearly shows resourceAddress='null' but also responseHeaders="…Content-Location=https://.azure.com/;AccountKey="

**Environment summary**
SDK Version: 2.4.0 onwards
Java JDK version: 8
OS Version (e.g. Windows, Linux, MacOSX) Linux

**Additional context**
Only downgrading in pom.xml to versions before 2.4.0 makes it disappear and a working AsyncDocumentClient is created. It is also quite hard to spot the difference if esp. the withMasterKeyOrResourceToken-method didn't change, neither its documentation nor tags like @deprecated with a replacement. I assume the URL itself is not handled here but in the underlying Cosmos-library.