Changed validate_quota method to check individual quota items before …

…denying quota.

For Vm Reconfigure, If we add a disk it shouldn't deny because memory, cpus or number of vms is exceeded.

Fixes ManageIQ/manageiq-automation_engine#150

content/automate/ManageIQ/System/CommonMethods/QuotaMethods.class/__methods__/validate_quota.rb

@@ -14,6 +14,7 @@ def source_info
 
 def quota_check(item, used, requested, quota_max, quota_warn)
   $evm.log(:info, "Item: #{item} Used: (#{used}) Requested: (#{requested}) Max: (#{quota_max}) Warn: (#{quota_warn})")
+  return unless requested.positive?
   return unless quota_max + quota_warn > 0
   if quota_exceeded?(item, used, requested, quota_max)
     quota_exceeded(item, reason(item, used, requested, quota_max), false)