spec: Improve flakiness of live_events/client.rb spec
spec: Improve flakiness of live_events/client.rb spec

Sometimes, the fclient object is nil, which causes the
expect_put_records method to throw an error.

fixes PLAT-4795

Change-Id: I6ed981c800e1c0793f69d1c2636ef49892edd7ec
Reviewed-on: https://gerrit.instructure.com/207290
Tested-by: Jenkins
Reviewed-by: James Butters <4c5a489c9bb72d41f20b3b22aaf4c9b864e32f20@instructure.com>
QA-Review: Tucker Mcknight <4b51b98c1d84aa97854d216bd061ce5d3eda8a28@instructure.com>
Product-Review: Tucker Mcknight <4b51b98c1d84aa97854d216bd061ce5d3eda8a28@instructure.com>

instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms