testing: Set terminal title when logging in via SSH

Since we always log in as root use a simpler command prompt. And don't
store duplicate commands in the bash command history.

testing/hosts/default/root/.bashrc

@@ -0,0 +1,11 @@
+# don't store duplicate entries in the history
+export HISTCONTROL=erasedups
+# use a simple prompt of host:pwd# (user is always root)
+PS1='\h:\w\$ '
+# set the terminal title to host:pwd
+case $TERM in
+xterm*)
+	PROMPT_COMMAND='echo -ne "\033]0;${HOSTNAME}:${PWD}\007"'
+	;;
+esac
+