extend primary creds by internal URL

[gannulka]

primaryCreds object in values.yaml should be extended by url. This URL should be sent to api as part of

accessInfo: {
  urls: [{
"url": "someinternalurl",
"user":"admin",
"password":"admin_passwrod"
}]
}

primaryCreds:
  url: "someinternalurl"
  namespace: "hossted-mongodb"

Please note: this url is not the same as we set in ingress.hostname. Basically this is internal url(inside cluster)

[AdheipSingh]

Low priority. Will take this up after #118 and #117