This bug seems to be due to rare situation, so we could not identify
the reason for now.
But this bug occurred when cloud-shell.controller is missing container ID.
If this bug occur, the toast popups so many and they are so obstacle.
So this patch changes cloud-shell.controller to ignure the resize event
when container ID was missing.
Change-Id: I598c11c9fb2086e7e001b70df8de57968d6d13db
Closes-Bug: #1764953
ad6898f17a