Changing oauth2endpoints.war to oauth2.war

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180790 a5903396-d722-0410-b921-86c7d4935375
Chaning oauth2endpoints.war to oauth2.war

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180791 a5903396-d722-0410-b921-86c7d4935375
Fixing KeyStore methods to retrieve truststores that do not have a private key entries or primary certificates

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@180792 a5903396-d722-0410-b921-86c7d4935375