Able to create a local claim without mapped attribute

[nilasini]

Description:
When adding a local claim there are some required fields, mapped attribute is one of them. But mapped attribute allow space as a valid input and allows to add a local claim.
But after got added there is no mapped attribute.

It should be corrected as, not to allow the space when add mapped attribute.

Suggested Labels:
claim-mgt,bug

Affected Product Version:
5.3.0 GA

Steps to reproduce:
Go to claims->Add->Add Local Claim->.
Provide the required information and give space for mapped attribute.