[build] Use flink-shaded-force-shading to force all submodules to generate dependency-reduced-pom.xml

This will erase all properties in dependency-reduced-pom.xml and
pin all properties to a constant value. For example, ${flink.version}
will be replaced by the actual Flink version, which is safer for users
to reference it.

.gitignore

@@ -24,3 +24,4 @@ build-targetatlassian-ide-plugin.xml
 *.iws
 docs/_build
 **/.flattened-pom.xml
+**/dependency-reduced-pom.xml

pom.xml

@@ -73,6 +73,7 @@ under the License.
         <!-- dependencies versions -->
         <flink.version>1.18.0</flink.version>
         <flink.major.version>1.18</flink.major.version>
+        <flink.shaded.version>17.0</flink.shaded.version>
         <debezium.version>1.9.7.Final</debezium.version>
         <tikv.version>3.2.0</tikv.version>
         <geometry.version>2.2.0</geometry.version>
@@ -149,11 +150,17 @@ under the License.
             <version>${slf4j.version}</version>
         </dependency>
 
-        <!--  Use fixed version 30.1.1-jre-16.1 of flink shaded guava  -->
         <dependency>
             <groupId>org.apache.flink</groupId>
             <artifactId>flink-shaded-guava</artifactId>
-            <version>31.1-jre-17.0</version>
+            <version>31.1-jre-${flink.shaded.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-shaded-force-shading</artifactId>
+            <version>${flink.shaded.version}</version>
+            <optional>true</optional>
         </dependency>
 
         <!-- test dependencies -->
@@ -435,9 +442,6 @@ under the License.
                             <shadeTestJar>false</shadeTestJar>
                             <shadedArtifactAttached>false</shadedArtifactAttached>
                             <createDependencyReducedPom>true</createDependencyReducedPom>
-                            <dependencyReducedPomLocation>
-                                ${project.basedir}/target/dependency-reduced-pom.xml
-                            </dependencyReducedPomLocation>
                             <filters combine.children="append">
                                 <filter>
                                     <artifact>*:*</artifact>
@@ -451,8 +455,13 @@ under the License.
                             </filters>
                             <artifactSet>
                                 <includes>
-                                    <!-- include nothing -->
-                                    <include></include>
+                                    <!--
+                                        We need the next line to enforce all submodules to execute shade and generate
+                                        dependency-reduced-pom.xml, to erase all properties defined in parent pom and
+                                        pin them to a fixed value. For example in the dependency-reduced-pom.xml of
+                                        submodules, ${flink.version} will be resolved as the actual Flink version.
+                                    -->
+                                    <include>org.apache.flink:flink-shaded-force-shading</include>
                                 </includes>
                             </artifactSet>
                         </configuration>