Code review comment for lp:~tsarev/percona-server/test55_691404

Let's read bug #691404:

"
Ensure --log-slow-admin-statements is:

1) added to SHOW VARIABLES
2) can be set online (global variable is enough)
3) ensure it logs ALL statements.
"

But the revision comment only mentions "add log-slow-admin-statements to GLOBAL_VARIABLES", i.e. 1). And 1) is the only condition covered by tests. What about testing 2) and 3)?