What type of PR is this?

/kind bug
Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind bug /kind task /kind feature

What does this PR do / why do we need it:

Which issue(s) this PR fixes:

#I4DZKT:[1.3.0][Resource Group] DistributedResourceGroupTemp cast exception with openlookeng HA
Fixes #

Special notes for your reviewers:

不开启HA，root BaseResourceGroup的实现类为InternalResourceGroup,subGroup 为InternalResourceGroup;
开启HA后，root BaseResourceGroup的实现类为 DistributedResourceGroupTemp,subGroup为DistributedResourceGroupTemp，此时调用internalGenerateCpuQuote方法时，第686行，subGroups内的对象应该为DistributedResourceGroupTemp，而不是InternalResourceGroup