Smctl register-broker URL validation

[stefanvassilev]

Issue Template

Step 1: Is this issue for here?

most likely

Step 2: Describe the problem (very short text description)

Calling smctl register-broker passing url ending with a / results in error as the resulting call to the service broker contains the extra slash

call received by service broker:

GET //v2/catalog HTTP/1.1" 400

Step 3: Describe the problem (steps):

smctl register-broker BROKER_NAME https://*/ -b ****:****

Observed Results:

Error: request POST .... failed: Status code: 400 Body: {"error":"ServiceBrokerErr","description":"error fetching catalog for broker with name *****: broker responded with 400 Bad Request"}