LU-11673 tests: add space before ']' in test-framework

LU-11673 tests: add space before ']' in test-framework

The test command '[' expects spaces before all arguments
including the closing ']'.

Add a space before the closing ']' in the function
print_summary() in test-framework.sh.

Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: If2365cb5f2b9c003949c6224997644c61341fe35
Reviewed-on: https://review.whamcloud.com/35079
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Wei Liu <sarah@whamcloud.com>