Fixed the cat.health REST test to accept 4ms, not just 4.0ms
\d+ \s+ # init
\d+ \s+ # unassign
\d+ \s+ # pending_tasks
- (-|\d+[.]\d+ms|s) \s+ # max task waiting time
+ (-|\d+(?:[.]\d+)?m?s) \s+ # max task waiting time
\d+\.\d+% # active shards percent
\n
)+
\d+ \s+ # init
\d+ \s+ # unassign
\d+ \s+ # pending_tasks
- (-|\d+[.]\d+ms|s) \s+ # max task waiting time
+ (-|\d+(?:[.]\d+)?m?s) \s+ # max task waiting time
\d+\.\d+% # active shards percent
\n
)+
