move back to nova.sh method of configuring screen

instead of overwriting screenrc (which is useful for new VMs), we manually set
the screen status line - fixes bug 902297

Change-Id: I507dc36e85e2bc3635503cde426bab8a2e966f06

files/screenrc

@@ -1,9 +0,0 @@
-hardstatus on
-hardstatus alwayslastline
-hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G}%H %{..Y}%d/%m %c"
-
-defscrollback 10240
-
-vbell off
-startup_message off
-

stack.sh

@@ -569,10 +569,6 @@ if [[ "$ENABLED_SERVICES" =~ "quantum" ]]; then
     cd $QUANTUM_DIR; sudo python setup.py develop
 fi
 
-# Add a useful screenrc.  This isn't required to run openstack but is we do
-# it since we are going to run the services in screen for simple
-cp $FILES/screenrc ~/.screenrc
-
 # Syslog
 # ---------
 
@@ -1122,6 +1118,8 @@ function screen_it {
 # create a new named screen to run processes in
 screen -d -m -S stack -t stack
 sleep 1
+# set a reasonable statusbar
+screen -r stack -X hardstatus alwayslastline "%-Lw%{= BW}%50>%n%f* %t%{-}%+Lw%< %= %H"
 
 # launch the glance registry service
 if [[ "$ENABLED_SERVICES" =~ "g-reg" ]]; then