kotlin-bom: Add distributionManagement and signing profile

Since kotlin-bom intentionally has no parent these settings have to be duplicated
same as in the root kotlin-project pom.

#KT-18398

libraries/tools/kotlin-bom/pom.xml

@@ -173,4 +173,42 @@
         </dependencies>
     </dependencyManagement>
 
+    <distributionManagement>
+        <repository>
+            <id>${deploy-repo}</id>
+            <url>${deploy-url}</url>
+        </repository>
+        <snapshotRepository>
+            <id>sonatype-nexus-staging</id>
+            <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
+        </snapshotRepository>
+    </distributionManagement>
+
+    <profiles>
+        <profile>
+            <id>sign-artifacts</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>1.4</version>
+                        <configuration>
+                            <passphrase>${kotlin.key.passphrase}</passphrase>
+                            <keyname>${kotlin.key.name}</keyname>
+                            <homedir>../../.gnupg</homedir>
+                        </configuration>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
 </project>