Fixed Liquibase properties which where not compatible with MySQL

[Coduz]

This PR fixes Liquibase properties for MySQL which are currently not compatible

Related Issue
None

Description of the solution adopted
For some reasons MySQL database was replacing the CURRENT_TIMESTAMP(3) invocation with NOW() which makes defintions like:

created_on TIMESTAMP(3) DEFAULT NOW()

result the following error:

Caused by: liquibase.exception.DatabaseException: (conn=9) Invalid default value for 'created_on' [Failed SQL: (1067) CREATE TABLE kapuadb.athz_domain (scope_id BIGINT unsigned NULL, id BIGINT unsigned AUTO_INCREMENT NOT NULL, created_on timestamp(3) DEFAULT NOW() NOT NULL, created_by BIGINT unsigned NOT NULL, name VARCHAR(255) NOT NULL, serviceName VARCHAR(1023) NOT NULL, CONSTRAINT PK_ATHZ_DOMAIN PRIMARY KEY (id), UNIQUE (name))]

Replacing CURRENT_TIMESTAMP(3) with NOW(3) makes everything work as expected in MySQL.

Screenshots
None

Any side note on the changes made
Since H2 works fine with NOW(), CURRENT_TIMESTAMP() and CURRENT_TIMESTAMP(3) it has been left using CURRENT_TIMESTAMP(3)

[codecov]

Codecov Report

Merging #3271 (32cc916) into develop (f6ac4d3) will decrease coverage by 7.87%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #3271      +/-   ##
=============================================
- Coverage      49.32%   41.45%   -7.88%     
+ Complexity       762      745      -17     
=============================================
  Files           1455     1455              
  Lines          29749    29749              
  Branches        2498     2498              
=============================================
- Hits           14675    12333    -2342     
- Misses         14244    16785    +2541     
+ Partials         830      631     -199     

Impacted Files	Coverage Δ	Complexity Δ
...pse/kapua/kura/simulator/GatewayConfiguration.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...a/kura/simulator/birth/BirthCertificateModule.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...pua/service/account/internal/AccountQueryImpl.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...ua/service/datastore/internal/schema/Metadata.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...ervice/account/internal/AccountListResultImpl.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
.../service/datastore/internal/model/DataIndexBy.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...device/call/message/kura/data/KuraDataMessage.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-2.00%)
...device/call/message/kura/data/KuraDataPayload.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-1.00%)
...datastore/internal/model/DatastoreMessageImpl.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...atastore/internal/model/metric/MetricsIndexBy.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
... and 107 more