ci.jpl: Support multiple spaces in string of filter groups

To avoid the unexpected error when there are multiple spaces between
config group names, improve the replace logic to filter config groups.

Also, extra spaces at the beginning and end of the string of filter
groups can also be supported by this patch.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: Icbb2812f70ebab6418765acbe508cf43929abf98
1 file changed