Selenium Sessions not being closed

[aep7128]

When Selenium is used, a lot of the chrome services remain open, which causes a memory overload and can slow down our tests and runtime. All selenium instances should be closed after use to remove these lingering Chrome instances

[cju8676]

i added driver.quit() in src/main/java/edu/rit/se/nvip/crawler/htmlparser/GenericCveParser.java, but i think this needs to be moved. other parsers use Selenium, not just generic, so we will probably have to move it to somewhere that'll close out the driver whenever ALL of the crawler threads have finished