KYLIN-3475 Make calcite connection is more configurable

[ian4hu]

reported by https://issues.apache.org/jira/browse/KYLIN-3475

[asfgit]

Can one of the admins verify this patch?

[coveralls]

Pull Request Test Coverage Report for Build 3377

• 4 of 5 (80.0%) changed or added relevant lines in 2 files are covered.
• 5 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.2%) to 24.727%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core-common/src/main/java/org/apache/kylin/common/KylinConfigBase.java	3	4	75.0%

Files with Coverage Reduction	New Missed Lines	%
core-cube/src/main/java/org/apache/kylin/cube/inmemcubing/MemDiskStore.java	5	77.81%

Totals
Change from base Build 3376:	0.2%
Covered Lines:	15572
Relevant Lines:	62976

---

💛 - Coveralls

[ian4hu]

@shaofengshi Would you mind verifying this PR?

[shaofengshi]

Thanks Hu! We will run the integration test for this PR; Thanks!

[shaofengshi]

Compile and mvn test all good.

It looks good to me.

@liyang-gmt8 @rogercloud , please also take a review. Thanks!

[shaofengshi]

Hi Ian, we need the commit message started with JIRA ID, for example: "KYLIN-3475 Make calcite connection configurable". Please update the commit message. You can do that with "git rebase -i HEAD~1" in your branch. After the commit message be updated, re-push to your fork, this PR will be automatically refreshed.

Thanks!

[ian4hu]

@liyang-gmt8 done.