feat: hdfs glob

[veezhang]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

fix #283

Description:

How do you solve it?

Special notes for your reviewer, ex. impact of this fix, design document, etc:

[codecov-commenter]

Codecov Report

Patch coverage: 77.13% and project coverage change: -2.32% ⚠️

Comparison is base (a0a27ca) 90.20% compared to head (d53e628) 87.88%.
Report is 5 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #284      +/-   ##
==========================================
- Coverage   90.20%   87.88%   -2.32%     
==========================================
  Files          75       79       +4     
  Lines        3350     3856     +506     
==========================================
+ Hits         3022     3389     +367     
- Misses        323      458     +135     
- Partials        5        9       +4     

Files Changed	Coverage Δ
pkg/source/config.go	88.00% <0.00%> (-12.00%)	⬇️
pkg/source/glob.go	0.00% <0.00%> (ø)
pkg/source/source_mock.go	0.00% <0.00%> (ø)
pkg/spec/base/builder_mock.go	0.00% <0.00%> (ø)
pkg/source/local.go	71.42% <29.41%> (-28.58%)	⬇️
pkg/importer/importer.go	95.38% <57.14%> (-4.62%)	⬇️
pkg/source/hdfs.go	77.18% <70.68%> (-22.82%)	⬇️
pkg/source/gcs.go	85.00% <85.00%> (ø)
pkg/config/base/source.go	100.00% <100.00%> (ø)
pkg/config/v3/source.go	100.00% <100.00%> (ø)
... and 10 more

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