chore(0.4.2/2019-11-27--add_collections_series_id.xml): fix migration on MySQL.

The error was:
liquibase.exception.ValidationFailedException: Validation Failed:
  1 changes have validation failures
    Cannot add a non-primary key identity column, classpath:/liquibase/version/0.4.2/2019-11-27--add_collections_series_id.xml::add-collections_series-id-field::php-coder

Use a single <addColumn> statement for MySQL/PostgreSQL and perform it in the 2 steps for H2.
Also remove beforeColumn that didn't work -- MySQL doesn't support it so we use FIRST clause
instead. PostgreSQL doesn't support defining a column position at all. For H2 use FIRST as well.

Correction for 2675e9f commit.

Address to #1123

Author: php-coder

src/main/resources/liquibase/version/0.4.2/2019-11-27--add_collections_series_id.xml

@@ -5,17 +5,40 @@
 	xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
 		http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">
 
-	<changeSet id="add-collections_series-id-field" author="php-coder" context="scheme">
+	<changeSet id="add-collections_series-id-field" author="php-coder" context="scheme" dbms="h2">
 
 		<addColumn tableName="collections_series">
-			<column name="id" type="INTEGER" autoIncrement="true" beforeColumn="collection_id" />
+			<column name="id" type="INTEGER" autoIncrement="true" />
 		</addColumn>
 
+		<modifySql>
+			<append value=" FIRST" />
+		</modifySql>
+		
+	</changeSet>
+	
+	<changeSet author="php-coder" id="add-collections_series-id-pk" context="scheme" dbms="h2">
+		
 		<addPrimaryKey
 			tableName="collections_series"
 			columnNames="id"
 			constraintName="pk_collections_series_id" />
 
 	</changeSet>
 
+	<changeSet id="add-collections_series-id-field" author="php-coder" context="scheme" dbms="mysql,postgresql">
+		
+		<addColumn tableName="collections_series">
+			<column name="id" type="INTEGER" autoIncrement="true">
+				<constraints primaryKey="true" primaryKeyName="pk_collections_series_id" />
+			</column>
+		</addColumn>
+		
+		<modifySql dbms="mysql">
+			<!-- Workaround for: https://liquibase.jira.com/browse/CORE-2347 -->
+			<append value=" FIRST" />
+		</modifySql>
+		
+	</changeSet>
+	
 </databaseChangeLog>