Revert "Revert "XS host free memory might change, if user manually changes dom0 memory,""

This reverts commit 74153e4a79a064139a6ecce48f8eb1308318beab.
    XS host free memory might change, if user manually changes dom0 memory,
    this patch makes CS update latest XS host free memory on host connect process.
Fixed issue with detail view fields marked as 'isPassword' not being obfuscated

CLOUDSTACK-5111