Downgrade travis orientdb version to 2.0.11

[ernestas-poskus]

Testing with Travis with orientdb 2.0.11

[ernestas-poskus]

func NewDBClient(opts ClientOptions) (*DBClient, error) {
.....
// after connecting the OrientDB server sends back 2 bytes - its binary protocol version
readbuf := make([]byte, 2)
n, err := conx.Read(readbuf)
if err != nil {
    return nil, oerror.NewTrace(err)
}

n, err := conx.Read(readbuf)

n returns 0 for some reason, maybe orientdb setup is bad will test with extra bash script

[ernestas-poskus]

@quux00 hey good news, travis is fixed problem was with binary configuration

n returns 0 for some reason, maybe orientdb setup is bad will test with extra bash script

☝️ that is connection error and it should have happen sooner for example when initialising connection to driver.