Bug #1347465 : Malformed attribute names for select string in UVEs

Change-Id: Ie4e98caa5382ebf4b8e156e99250b42ba3db1a67
* Once composite NH is deleted, all the member component NH reference
  would be released. If the same composite NH gets reused, then
  component NH list was not getting populated. Fixing the same.
* Tests in test_nh already take for a UT for this case.
* Fix for bug 1349165

Change-Id: If744f046ad78bdef3847a7fb84ff0a86951ef6b8
Merge "* Once composite NH is deleted, all the member component NH reference   would be released. If the same composite NH gets reused, then   component NH list was not getting populated. Fixing the same. * Tests in test_nh already take for a UT for this case. * Fix for bug 1349165"