added fingerprints

README.md

@@ -94,7 +94,10 @@ Job submission commands (srun, sbatch, salloc) have a common set of important op
 
 As mentioned above, we have two clusters **parlab** and **gpulab**.
 Access to the cluster is always through the front-end server using SSH on port 42222.
-Front-end servers have the same name as the cluster, i.e. **parlab.ms.mff.cuni.cz** and **gpulab.ms.mff.cuni.cz**.
+Front-end servers have the same name as the cluster, i.e. **parlab.ms.mff.cuni.cz** 
+(fingerprint `SHA256:pTXSzeYjwoQ254t4w1GT8MwwOaT1cXgpgIc1/I2xdtI`)
+and **gpulab.ms.mff.cuni.cz**
+(fingerprint `SHA256:wfxm3EqpHA67AuylZILt6x77gJCUFJEnxBjMEQJY1Hw`).
 
 #### Course users