[GOBBLIN-1019] Change jcenter url to https

[jack-moseley]

Dear Gobblin maintainers,

Please accept this PR. I understand that it will not be reviewed until I have checked off all the steps below!

JIRA

• My PR addresses the following Gobblin JIRA issues and references them in the PR title. For example, "[GOBBLIN-XXX] My Gobblin PR"
  • https://issues.apache.org/jira/browse/GOBBLIN-1019

Description

• Here are some details about my PR, including screenshots (if applicable):
  Change jcenter url to https to fix build since http returns 403 as of 01/13/20 (see https://jfrog.com/blog/secure-jcenter-with-https/)

Tests

• My PR adds the following unit tests OR does not need testing for this extremely good reason:

Commits

• My commits all reference JIRA issues in their subject lines, and I have squashed multiple commits if they address the same issue. In addition, my commits follow the guidelines from "How to write a good git commit message":
  1. Subject is separated from body by a blank line
  2. Subject is limited to 50 characters
  3. Subject does not end with a period
  4. Subject uses the imperative mood ("add", not "adding")
  5. Body wraps at 72 characters
  6. Body explains "what" and "why", not "how"

[codecov-io]

Codecov Report

Merging #2865 into master will increase coverage by 41.64%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             master    #2865       +/-   ##
=============================================
+ Coverage       4.1%   45.75%   +41.64%     
- Complexity      747     9104     +8357     
=============================================
  Files          1917     1917               
  Lines         72131    72131               
  Branches       7956     7956               
=============================================
+ Hits           2961    33002    +30041     
+ Misses        68851    36102    -32749     
- Partials        319     3027     +2708

Impacted Files	Coverage Δ	Complexity Δ
...gobblin/service/monitoring/JobStatusRetriever.java	0% <0%> (ø)	2% <0%> (+2%)	⬆️
...ata/management/copy/hive/HivePartitionFileSet.java	0.95% <0%> (+0.95%)	1% <0%> (+1%)	⬆️
...ain/java/org/apache/gobblin/runtime/TaskState.java	81.97% <0%> (+1.16%)	32% <0%> (ø)	⬇️
...pache/gobblin/runtime/GobblinMultiTaskAttempt.java	56.3% <0%> (+1.35%)	27% <0%> (+2%)	⬆️
...ava/org/apache/gobblin/runtime/MultiConverter.java	83.6% <0%> (+1.63%)	9% <0%> (+1%)	⬆️
...rg/apache/gobblin/runtime/FsDatasetStateStore.java	73.8% <0%> (+1.78%)	35% <0%> (+1%)	⬆️
...a/org/apache/gobblin/cluster/SingleTaskRunner.java	1.85% <0%> (+1.85%)	1% <0%> (+1%)	⬆️
.../java/org/apache/gobblin/runtime/TaskExecutor.java	45.35% <0%> (+2.73%)	9% <0%> (+1%)	⬆️
...apache/gobblin/source/jdbc/SqlServerExtractor.java	4.41% <0%> (+4.41%)	3% <0%> (+3%)	⬆️
...ava/org/apache/gobblin/http/ApacheHttpRequest.java	5.55% <0%> (+5.55%)	1% <0%> (+1%)	⬆️
... and 1110 more

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[sv2000]

+1. LGTM.