[Deps] Switch to slf4j-reload4j

[kaijchen]

What changes were proposed in this pull request?

1. Replace slf4j-log4j12 with slf4j-reload4j.
2. Change dependency scope to runtime.

Why are the changes needed?

Eliminate this warning from maven:

[WARNING] While downloading org.slf4j:slf4j-log4j12:1.7.36
  This artifact has been relocated to org.slf4j:slf4j-reload4j:1.7.36.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

CI.

[codecov-commenter]

Codecov Report

Merging #508 (9e3eee9) into master (3ba56c5) will increase coverage by 0.75%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #508      +/-   ##
============================================
+ Coverage     59.75%   60.51%   +0.75%     
+ Complexity     1765     1633     -132     
============================================
  Files           205      192      -13     
  Lines         11527    10251    -1276     
  Branches       1033      911     -122     
============================================
- Hits           6888     6203     -685     
+ Misses         4233     3672     -561     
+ Partials        406      376      -30     

Impacted Files	Coverage Δ
...preduce/task/reduce/RssRemoteMergeManagerImpl.java
...apache/hadoop/mapreduce/v2/app/RssMRAppMaster.java
...n/java/org/apache/hadoop/mapreduce/RssMRUtils.java
...g/apache/hadoop/mapred/SortWriteBufferManager.java
.../hadoop/mapreduce/task/reduce/RssBypassWriter.java
...java/org/apache/hadoop/mapred/SortWriteBuffer.java
.../java/org/apache/hadoop/mapreduce/RssMRConfig.java
.../hadoop/mapreduce/task/reduce/RssEventFetcher.java
...n/java/org/apache/hadoop/mapreduce/MRIdHelper.java
...mapreduce/task/reduce/RssInMemoryRemoteMerger.java
... and 3 more

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[jerqi]

LGTM