Description of problem:

The Import Virtual Machine feature fails to load properly when using VMWare source and a source Datacenter name that contains one or more spaces


Version-Release number of selected component (if applicable):
rhevm-3.6.8.1-0.1.el6
vdsm-4.17.33-1.el7ev
libvirt-daemon-1.2.17-13.el7_2.5
virt-v2v-1.28.1-1.55.el7_2.4


How reproducible:  100%


Steps to Reproduce:
1.  Go to Virtual Machines tab and click 'Import'
2.  Select 'VMWare' as the Source
3.  Enter in appropriate info for vCenter, ESXi, Username, and Password
4.  Enter in Datacenter value that includes at least one space, such as 'VC 5.5 Datacenter'
5.  Click Load button

Actual results:

Failed to communicate with the external provider, see log for additional details.


Expected results:

The 'Virtual Machines on Source' list is populated


Additional info:

engine.log
---
2016-08-10 15:25:09,586 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.GetVmsFromExternalProviderVDSCommand] (ajp-/127.0.0.1:8702-9) [] START, GetVmsFromExternalProviderVDSCommand(HostName = rhev2, GetVmsFromExternalProviderParameters:{runAsync='true', hostId='81a07b21-7635-4d61-8d5c-4aa9adcde0a8', url='vpx://Administrator.com/VC 5.5 Datacenter/5-5.Cluster/esx.example.com?no_verify=1', username='Administrator'}), log id: 4e07d2d6
---


vdsm.log
---
jsonrpc.Executor/6::DEBUG::2016-08-10 15:25:09,589::__init__::515::jsonrpc.JsonRpcServer::(_serveRequest) Calling 'Host.getExternalVMs' in bridge with {u'username': u'Administrator', u'password': '********', u'uri': u'vpx://Administrator.com/VC 5.5 Datacenter/5-5.Cluster/esx.example.com?no_verify=1'}
[...]
jsonrpc.Executor/6::ERROR::2016-08-10 15:25:19,616::v2v::147::root::(get_external_vms) error connection to hypervisor: 'internal error: Unable to parse URI vpx://Administrator.com/VC 5.5 Datacenter/5-5.Cluster/esx.example.com?no_verify=1'
---


The correct URI should be:

  vpx://Administrator.com/VC%205.5%20Datacenter/5-5.Cluster/esx.example.com?no_verify=1