Read a customer account from the account service

[Ibohn]

**As a** customer service agent  
**I need** to retrieve a customer account  
**So that** I can view customer information  

### Details and Assumptions
* Each account has a unique ID
* The service exposes a REST API

### Acceptance Criteria
```gherkin
Given a valid account ID
When I request the account details
Then the system returns the correct account information