[ssh] update config

.ssh/config

@@ -5,11 +5,13 @@ ControlPath /tmp/%r@%h:%p
 ControlPersist yes
 
 Host *
-  UseRoaming no
   IdentityFile ~/.ssh/id_rsa
 
-Host kejadlen.net
+Host github.com
-  IdentityFile ~/.ssh/pressure_drop_rsa
+  IdentityFile ~/.ssh/github_rsa
+
+Host congenital-optimist.arbitrarydefinitions.com
+  IdentityFile ~/.ssh/id_congenital_optimist
 
 Host kejadlen.console.xen.prgmr.com
   IdentityFile ~/.ssh/prgmr_rsa