Bug 1028284

Description of problem:
Given a small scaling app created. Add a medium gear db cartridge for this app by restapi. It will return error: No nodes available. If the problem persists please contact Red Hat support. But actually, the DB medium gear has been created in the small node. Thus some operation like 'rhc app show $app" or 'rhc domain show' will be blocked with error "Unable to complete the requested operation due to: No nodes available. If the problem persists please contact Red Hat support. 
Reference ID: ab6cf774b9c919554b845afb40ed9a4f"

the multi-node env condition is:
1. enable the NODE_PROFILE
2. no medium node.

Version-Release number of selected component (if applicable):
devenv_4003

How reproducible:
always

Steps to Reproduce:
1. Create multi-node env(1 district include 2 small node) and make sure NO medium node.
2. Enable the NODE_PROFILE in /etc/openshift/plugins.d/openshift-origin-msg-broker-mcollective-dev.conf
  NODE_PROFILE_ENABLED=true
3. Create one small scalable app
   rhc app create zqphps php-5.3 -s
4. Add one medium mysql-5.3 db cartridge by restapi
  curl -s -k -H Content-Type:application/json -u user:pass https://instance/broker/rest/domains/zqd/applications/zqphps/cartridges -X POST -d '{"name":"mysql-5.1","gear_size":"medium"}'
5. rhc domain show

Actual results:
step 4:
will be show error:
No nodes available. If the problem persists please contact Red Hat support
but in fact, the medium gear has been created in one node

 694234410245577689268224]# ls
app-deployments  app-root  mysql

step 5:
rhc domain show
Unable to complete the requested operation due to: No nodes available. If the problem persists please contact Red Hat support. 
Reference ID: ab6cf774b9c919554b845afb40ed9a4f

Expected results:
This medium gear should not be created and rhc domain show 

Additional info:
if create an app with medium gear on NO medium node env,it won't create a gear in node.