Add two alias in bashrc

Signed-off-by: Arnaud M <arnaud.choupinette@mailops.fr>

userdata/isen-postinstall.sh

@@ -75,9 +75,11 @@ let skip_defaults_vim = 1
 set mouse=
 EOF
 
-title.print "Set custom prompt"
+title.print "Configure bash"
 cat <<'EOF'>>/root/.bashrc
 PS1='\e[2;37m\u@\h\e[0m \e[0;32m$PWD\e[0m \e[1;31m>\e[0m '
+alias os=openstack
+alias k=kubectl
 EOF