add undo_log.sql and add database driver class config

[vikenlove]

add a sql file when the first time to use seata . it is init to sql database and add database driver class name of config

[codecov-io]

Codecov Report

Merging #1323 into develop will decrease coverage by 0.02%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             develop    #1323      +/-   ##
=============================================
- Coverage      48.68%   48.65%   -0.03%     
  Complexity      1643     1643              
=============================================
  Files            332      332              
  Lines          11517    11521       +4     
  Branches        1423     1424       +1     
=============================================
- Hits            5607     5606       -1     
- Misses          5291     5295       +4     
- Partials         619      620       +1

Impacted Files	Coverage Δ	Complexity Δ
...ava/io/seata/core/constants/ConfigurationKeys.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...eata/server/store/db/DruidDataSourceGenerator.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...seata/server/store/db/DbcpDataSourceGenerator.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ata/core/store/db/AbstractDataSourceGenerator.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...server/store/file/FileTransactionStoreManager.java	47.03% <0%> (-0.35%)	19% <0%> (ø)

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[slievrly]

LGTM

[slievrly]

fix #1320

[slievrly]

In fact, the server side does not need the undolog table.

[xingfudeshi]

LGTM.

[xingfudeshi]

In fact, the server side does not need the undolog table.

Yes.But it is a good idea to provide undo_log scripts on the server side. Because it will always be the same as the server version.

[xingfudeshi]

i left a comment.

[xingfudeshi]

LGTM