feature: add prefix counter for NamedThreadFactory

[ggndnn]

Ⅰ. Describe what this PR did

Though PR #1576 is one reason of #1702, but it's obviously incomplete. I suspect that there are multiple AsyncCommitting threads executing at the same time causing this test failure.

The reason is that maven-surefire-plugin was used, but parameters reuseForks and forkCount were left to be their default values. According to maven-surefire-plugin doc, only one VM was forked and then reused to execute all tests.

The log below could prove this, notice the UUID used in two test cases:

[INFO] Running io.seata.server.UUIDGeneratorOverflowTest
[UUID 0] is: 4022933692
[UUID 1] is: 4022933693
[UUID 2] is: 4022933694
[UUID 3] is: 4022933695
[UUID 4] is: 4022933696
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.001 s - in io.seata.server.UUIDGeneratorOverflowTest
[INFO] Running io.seata.server.event.DefaultCoreForEventBusTest
2019-09-23 10:28:11.754 INFO [main]io.seata.server.coordinator.DefaultCore.begin:142 -Successfully begin global transaction xid = 172.17.0.1:0:4022933697

Because several test case in seata didn't release resources in time, for example, in test case DefaultCoordinatorMetricsTest, DefaultCoordinator#init was called, but never destroyed, that when DefaultCoreForEventBusTest started, there may be more than one asyncCommitting threads running.

It's not so easy to reproduce this test failure, so this PR is opened to verify this suspicion, just waiting for the next failure. I'm not sure whether this suspicion is correct, if it proves right, all test cases should be checked and try to release resources created correctly.

This suspicion proves correct, if we can get log looks like below, please notice the thread name:

2019-09-23 10:28:11.850 INFO [AsyncCommitting_1_1]io.seata.server.coordinator.DefaultCore.doGlobalCommit:245 -Global[172.17.0.1:0:4022933697] committing is successfully done.
2019-09-23 10:28:11.851 INFO [AsyncCommitting_2_1]io.seata.server.coordinator.DefaultCore.doGlobalCommit:245 -Global[172.17.0.1:0:4022933697] committing is successfully done.
[ERROR] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.042 s <<< FAILURE! - in io.seata.server.event.DefaultCoreForEventBusTest
[ERROR] test  Time elapsed: 1.041 s  <<< FAILURE!
org.opentest4j.AssertionFailedError: expected: <1> but was: <2>
	at io.seata.server.event.DefaultCoreForEventBusTest.test(DefaultCoreForEventBusTest.java:82)
[INFO] 
[INFO] Results:
[INFO] 
[ERROR] Failures: 
[ERROR]   DefaultCoreForEventBusTest.test:82 expected: <1> but was: <2>
[INFO] 
[ERROR] Tests run: 90, Failures: 1, Errors: 0, Skipped: 1

Update(2019/10/17):

As the issue #1702 has been solved, change to a feature PR, it's helpful to investigate threads related issues.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1710 into develop will decrease coverage by 0.01%.
The diff coverage is 100%.

@@              Coverage Diff              @@
##             develop    #1710      +/-   ##
=============================================
- Coverage      50.73%   50.71%   -0.02%     
- Complexity      2162     2163       +1     
=============================================
  Files            414      414              
  Lines          14153    14156       +3     
  Branches        1700     1700              
=============================================
- Hits            7180     7179       -1     
- Misses          6284     6287       +3     
- Partials         689      690       +1

Impacted Files	Coverage Δ	Complexity Δ
...ava/io/seata/common/thread/NamedThreadFactory.java	90.47% <100%> (+1.58%)	6 <1> (+1)	⬆️
...server/store/file/FileTransactionStoreManager.java	59.21% <0%> (-0.99%)	29% <0%> (ø)
...very/registry/zk/ZookeeperRegisterServiceImpl.java	63.77% <0%> (-0.79%)	25% <0%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b78f425...0609821. Read the comment docs.

[xingfudeshi]

LGTM.

[jsbxyyx]

LGTM