Description of problem: 
Cannot get prometheus metrics of ASB


service-catalog & asb image using images from brew registry:
service-catalog: v3.10.0-0.38.0;Upstream:v0.1.16
asb: 1.2.10


How reproducible:
Always


Steps to Reproduce:
1. Deploy service catalog & ansible service broker by openshift ansible.
2. Check prometheus metrics of ASB by:
# oc login by chezhang user
# oc adm policy add-cluster-role-to-user cluster-debugger chezhang
# host=`oc get route -n openshift-ansible-service-broker | grep -v NAME | awk '{print $2}'`
#  curl -k -H "Authorization: bearer `oc whoami -t`" https://${host}/metrics | grep -i ^asb
3. Provision a serviceinstance from web console, check Check prometheus metrics of ASB again:
#  curl -k -H "Authorization: bearer `oc whoami -t`" https://${host}/metrics | grep -i ^asb


Actual results:  
2. None asb_specs_loaded{registry_name="dh"}, at this time.
$ curl -k -H "Authorization: bearer `oc whoami -t`" https://asb-1338-openshift-ansible-service-broker.apps.0510-d9c.qe.rhcloud.com/metrics | grep -i ^asb
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 11766  100 11766    0     0  12385      0 --:--:-- --:--:-- --:--:-- 12385
asb_deprovision_jobs 0
asb_provision_jobs 0
asb_sandbox 0
asb_specs_loaded{registry_name="apb-push"} 0
asb_specs_reset 1
asb_update_jobs 0

3. None asb_actions_requested{action="provision"}, asb_provision_jobs and asb_sandbox at this time:
$ curl -k -H "Authorization: bearer `oc whoami -t`" https://asb-1338-openshift-ansible-service-broker.apps.0510-d9c.qe.rhcloud.com/metrics | grep -i ^asb
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 11766  100 11766    0     0  12385      0 --:--:-- --:--:-- --:--:-- 12385
asb_deprovision_jobs 0
asb_provision_jobs 0
asb_sandbox 0
asb_specs_loaded{registry_name="apb-push"} 0
asb_specs_reset 1
asb_update_jobs 0


Expected results: 
2. Should get loaded specs count, such as:
 asb_specs_loaded{registry_name="dh"} 4

3. Should get provision request, provision jobs and sandbox count, such as below:
[While provisioning]:
asb_actions_requested{action="provision"} 1
asb_provision_jobs 1
asb_sandbox 1

[After provisioned]:
asb_actions_requested{action="provision"} 1


Addition info: 
None