Release 1.8.0

What's Changed

• Slice expiry reminder emails and redirect nginx logs to files for file beats by @kthare10 in #398
• 400 broker vm allocation policy by @kthare10 in #401
• 402 advance scheduling improvements by @kthare10 in #403
• Rel1.8 - changes by @kthare10 in #405

Full Changelog: rel1.7.1...rel1.8.0