CI: OSX set fixed hostname to avoid discovery_multicast failure
CI: OSX set fixed hostname to avoid discovery_multicast failure

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