support Variable Operation

[duhanmin]

variable	result
${yyyy-01-01}	2021-01-01
${yyyy-01-01%-2y}	2019-01-01
${yyyy-MM-01%-2M}	2021-02-01
${yyyy-MM-dd%-2d}	2021-03-31
${yyyy MM ----- HH%-1H}	2021 04 ----- 14
${yyyyMMdd%-1d}	20210401
${yyyyMM01%-1M}	20210301
${HH%-1H}	14

[duhanmin]

#2416

[codecov]

Codecov Report

Merging #2415 (cd5c9a4) into dev-1.2.0 (b462730) will increase coverage by 0.29%.
The diff coverage is 42.44%.

@@               Coverage Diff               @@
##             dev-1.2.0    #2415      +/-   ##
===============================================
+ Coverage        17.83%   18.12%   +0.29%     
- Complexity        1077     1094      +17     
===============================================
  Files              595      597       +2     
  Lines            17667    17805     +138     
  Branches          2635     2660      +25     
===============================================
+ Hits              3151     3228      +77     
- Misses           14092    14144      +52     
- Partials           424      433       +9     

Impacted Files	Coverage Δ
...on/exception/VariableOperationFailedException.java	0.00% <0.00%> (ø)
...he/linkis/common/utils/VariableOperationUtils.java	43.20% <43.20%> (ø)
...org/apache/linkis/common/utils/VariableUtils.scala	59.77% <50.00%> (-0.35%)	⬇️
.../org/apache/linkis/common/conf/Configuration.scala	53.33% <100.00%> (+53.33%)	⬆️
...org/apache/linkis/jobhistory/util/QueryUtils.scala	22.22% <0.00%> (+1.09%)	⬆️
...a/org/apache/linkis/scheduler/queue/Consumer.scala	100.00% <0.00%> (+14.28%)	⬆️
...ala/org/apache/linkis/common/utils/JsonUtils.scala	100.00% <0.00%> (+100.00%)	⬆️

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[peacewong]

LGTM.