Enabled enforcer check and round1 pom cleanup

pom.xml

@@ -33,13 +33,6 @@
         <url>https://github.com/killbill/killbill-adyen-plugin/issues</url>
     </issueManagement>
     <properties>
-        <check.skip-dependency>false</check.skip-dependency>
-        <check.skip-dependency-scope>false</check.skip-dependency-scope>
-        <check.skip-dependency-versions>false</check.skip-dependency-versions>
-        <check.skip-duplicate-finder>false</check.skip-duplicate-finder>
-        <check.skip-enforcer>true</check.skip-enforcer>
-        <check.skip-rat>false</check.skip-rat>
-        <check.skip-spotbugs>false</check.skip-spotbugs>
         <osgi.private>org.killbill.billing.plugin.adyen.*</osgi.private>
     </properties>
     <dependencyManagement>
@@ -331,38 +324,13 @@
             <artifactId>testng</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.testng</groupId>
-            <artifactId>testng</artifactId>
-            <scope>test</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.apache.ant</groupId>
-                    <artifactId>ant</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
     </dependencies>
     <build>
         <plugins>
-            <plugin>
-                <groupId>com.coveo</groupId>
-                <artifactId>fmt-maven-plugin</artifactId>
-                <version>2.9</version>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>format</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
             <plugin>
                 <groupId>com.github.spotbugs</groupId>
                 <artifactId>spotbugs-maven-plugin</artifactId>
-
                 <configuration>
-
                     <excludeFilterFile>spotbugs-exclude.xml</excludeFilterFile>
                 </configuration>
             </plugin>
@@ -409,25 +377,22 @@
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-
+                <artifactId>maven-enforcer-plugin</artifactId>
+                <configuration>
+                    <rules>
+                        <requireUpperBoundDeps>
+                            <excludes>
+                                <exclude>org.osgi:org.osgi.core</exclude>
+                                <exclude>org.slf4j:slf4j-api</exclude>
+                            </excludes>
+                        </requireUpperBoundDeps>
+                    </rules>
+                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.0.0-M5</version>
-                <configuration>
-                    <runOrder>random</runOrder>
-                    <skipTests>${skipTests}</skipTests>
-                    <useManifestOnlyJar>false</useManifestOnlyJar>
-                    <trimStackTrace>false</trimStackTrace>
-                    <systemPropertyVariables>
-                        <user.timezone>GMT</user.timezone>
-                        <org.slf4j.simpleLogger.showDateTime>true</org.slf4j.simpleLogger.showDateTime>
-                        <org.slf4j.simpleLogger.dateTimeFormat>yyyy-MM-dd'T'HH:mm:ss.SSSZ</org.slf4j.simpleLogger.dateTimeFormat>
-                        <killbill.test.use.connection.pool>false</killbill.test.use.connection.pool>
-                    </systemPropertyVariables>
-                </configuration>
+                <artifactId>maven-shade-plugin</artifactId>
+
             </plugin>
             <plugin>
                 <groupId>org.apache.rat</groupId>