add a unit test that uncovers the error in renew securechannel
add a unit test that uncovers the error in renew securechannel

jpfr/open62541,JGrothoff/open62541,StalderT/open62541,open62541/open62541,StalderT/open62541,open62541/open62541,StalderT/open62541,JGrothoff/open62541,open62541/open62541,jpfr/open62541,JGrothoff/open62541,jpfr/open62541,StalderT/open62541,jpfr/open62541,JGrothoff/open62541,open62541/open62541