add 'coordinatorAddress' to 'getNodeInfo' response.

[alon-e]

Description

adds 'coordinatorAddress' to 'getNodeInfo' response:

curl localhost:14265 \
  -X POST \
  -H 'Content-Type: application/json' \
  -H 'X-IOTA-API-Version: 1' \
  -d '{"command": "getNodeInfo"}' | jq
{
  "appName": "IRI Testnet",
  "appVersion": "1.5.5",
  "jreAvailableProcessors": 4,
...
  "coordinatorAddress": "HQUUXGMQOVHJFJPOELGYJ9EJYSCLQDGH9F9VYYQAJPR9DRYEYPBFWXTHEVHRMKGHRKJYXIQOLRVOLSXJJ",
  "duration": 21
}

Fixes #1056

Type of change

• Enhancement (a non-breaking change which adds functionality)

How Has This Been Tested?

• locally running a node
• changing Coo address and rerunning tests.

Checklist:

Please delete items that are not relevant.

• My code follows the style guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[alon-e]

this is the style guide speaking... I will align it back -- this file uses tabs :/

[GalRogozinski]

Can you also change the regression test in api_tests.feature in a seperate commit?

[alon-e]

Can you also change the regression test in api_tests.feature in a seperate commit?

Added.

[GalRogozinski]

can you just fix the indentation so that | will be on a single column?