CLOUDSTACK-7520: [UI] keep advanced search parameters visible after search has been run.

- Preserve the advanced search parameters, so that when the advanced search box is shown again,
it is populated with the values selected/entered previously, unless they have navigated away from the search results page,
or applied any additional filters/search parameters.

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
Signed-off-by: Rajani Karuturi <rajanikaruturi@gmail.com>