IDNCLOUD-175 get only user name without tenant domain
IDNCLOUD-175 get only user name without tenant domain

wso2-extensions/identity-cloud,Minoli/identity-cloud,sajithab/identity-cloud,sajithab/identity-cloud,sajithab/identity-cloud,Minoli/identity-cloud,wso2-extensions/identity-cloud,malithie/identity-cloud,malithie/identity-cloud,malithie/identity-cloud,sajithab/identity-cloud,wso2-extensions/identity-cloud,Minoli/identity-cloud,malithie/identity-cloud