Fixed: unnecessary regeneration of SSH keys in developer mode when they already existed.

Author: pavanaravapalli

server/src/main/java/com/cloud/server/ConfigurationServerImpl.java

@@ -616,7 +616,7 @@ public void updateKeyPairs() {
             }
             // FIXME: take a global database lock here for safety.
             boolean onWindows = isOnWindows();
-            if(!onWindows) {
+            if (!onWindows && !(privkeyfile.exists() && pubkeyfile.exists())) {
                 Script.runSimpleBashScript("if [ -f " + privkeyfile + " ]; then rm -f " + privkeyfile + "; fi; ssh-keygen -t ecdsa -m PEM -N '' -f " + privkeyfile + " -q 2>/dev/null || ssh-keygen -t ecdsa -N '' -f " + privkeyfile + " -q");
             }