engine-schema: upgrade path 4.19.0.0 to 4.20.0.0

[shwstppr]

Description

Adds an empty 4.19.0.0 to 4.20.0.0 upgrade path

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• build/CI

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5559668) 14.39% compared to head (2b0fc3f) 4.38%.
Report is 391 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #8608       +/-   ##
============================================
- Coverage     14.39%   4.38%   -10.01%     
============================================
  Files          2747     361     -2386     
  Lines        258936   28699   -230237     
  Branches      40322    5004    -35318     
============================================
- Hits          37263    1258    -36005     
+ Misses       216860   27302   -189558     
+ Partials       4813     139     -4674     

Flag	Coverage Δ
uitests	4.38% <ø> (?)

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[weizhouapache]

code lgtm

[weizhouapache]

@shwstppr
there are build errors

Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:21:8: Unused import - java.sql.PreparedStatement. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:22:8: Unused import - java.sql.ResultSet. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:23:8: Unused import - java.sql.SQLException. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:24:8: Unused import - java.text.ParseException. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:25:8: Unused import - java.text.SimpleDateFormat. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:26:8: Unused import - java.util.Date. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:27:8: Unused import - java.util.HashMap. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:28:8: Unused import - java.util.Map. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:31:8: Unused import - org.jasypt.exceptions.EncryptionOperationNotPossibleException. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:34:8: Unused import - com.cloud.utils.DateUtil. [UnusedImports]
Error:  /home/runner/work/cloudstack/cloudstack/engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41900to42000.java:35:8: Unused import - com.cloud.utils.crypt.DBEncryptionUtil. [UnusedImports]

[shwstppr]

@weizhouapache thanks for pointing that. Fixed