Save sql logs

Preserve sql logs in gate. A postgres bug was just found in the gate,
but the issue had to be reproduced locally since postgres logs aren't
saved. This fixes that.

Change-Id: I81e5fc52580383d6606d185ba7ac9fa10be52ff6
Related-Bug: #1321093

functions.sh

@@ -407,6 +407,19 @@ function cleanup_host {
         sudo cp /var/log/rabbitmq/* $BASE/logs/rabbitmq/
     fi
 
+    # db logs
+    if [ -d /var/log/postgresql ] ; then
+        # Rename log so it doesn't have an additional '.' so it won't get
+        # deleted
+        sudo cp /var/log/postgresql/*log $BASE/logs/postgres.log
+    fi
+    if [ -f /var/log/mysql.err ] ; then
+        sudo cp /var/log/mysql.err $BASE/logs/mysql_err.log
+    fi
+    if [ -f /var/log/mysql.log ] ; then
+        sudo cp /var/log/mysql.log $BASE/logs/
+    fi
+
     # libvirt
     if [ -d /var/log/libvirt ] ; then
         sudo cp /var/log/libvirt/libvirtd*.log $BASE/logs/