Update to use one version of slf4j defined at the top level pom

examples/features/perf/perf/pom.xml

@@ -49,7 +49,6 @@ under the License.
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
-         <version>${slf4j-version}</version>
       </dependency>
       <dependency>
          <!-- this is to have the ServerUtil -->

examples/features/standard/security-ldap/pom.xml

@@ -57,7 +57,6 @@ under the License.
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-simple</artifactId>
-         <version>1.7.7</version>
       </dependency>
       <dependency>
          <groupId>org.apache.directory.server</groupId>

examples/pom.xml

@@ -33,7 +33,6 @@ under the License.
    <name>ActiveMQ Artemis Examples</name>
 
    <properties>
-      <slf4j-version>1.7.10</slf4j-version>
       <activemq5-version>5.12.0</activemq5-version>
       <udp-address>231.7.7.7</udp-address>
       <activemq.basedir>${project.basedir}/..</activemq.basedir>

examples/protocols/openwire/chat/pom.xml

@@ -54,7 +54,6 @@ under the License.
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
-         <version>${slf4j-version}</version>
       </dependency>
    </dependencies>
    <profiles>

examples/protocols/openwire/message-listener/pom.xml

@@ -49,7 +49,6 @@ under the License.
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
-         <version>${slf4j-version}</version>
       </dependency>
    </dependencies>
 

examples/protocols/openwire/message-recovery/pom.xml

@@ -49,7 +49,6 @@ under the License.
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
-         <version>${slf4j-version}</version>
       </dependency>
       <dependency>
          <!-- this is to have the ServerUtil -->

examples/protocols/openwire/pom.xml

@@ -34,7 +34,6 @@ under the License.
 
    <properties>
       <activemq.basedir>${project.basedir}/../../..</activemq.basedir>
-      <slf4j-version>1.7.10</slf4j-version>
    </properties>
 
    <profiles>

examples/protocols/openwire/queue/pom.xml

@@ -49,7 +49,6 @@ under the License.
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
-         <version>${slf4j-version}</version>
       </dependency>
    </dependencies>
 

pom.xml

@@ -70,6 +70,7 @@
       <staging.siteURL>scp://people.apache.org/x1/www/activemq.apache.org</staging.siteURL>
       <netty.version>4.0.32.Final</netty.version>
       <jetty.version>9.2.11.v20150529</jetty.version>
+      <slf4j.version>1.7.12</slf4j.version>
       <maven.assembly.plugin.version>2.4</maven.assembly.plugin.version>
       <activemq.version.versionName>${project.version}</activemq.version.versionName>
       <activemq.version.majorVersion>1</activemq.version.majorVersion>
@@ -357,6 +358,21 @@
             <version>1.1.1</version>
             <!-- License: Apache 2.0 -->
          </dependency>
+         <dependency>
+             <groupId>org.slf4j</groupId>
+             <artifactId>slf4j-simple</artifactId>
+             <version>${slf4j.version}</version>
+         </dependency>
+         <dependency>
+             <groupId>org.slf4j</groupId>
+             <artifactId>slf4j-nop</artifactId>
+             <version>${slf4j.version}</version>
+         </dependency>
+         <dependency>
+             <groupId>org.slf4j</groupId>
+             <artifactId>slf4j-log4j12</artifactId>
+             <version>${slf4j.version}</version>
+         </dependency>
          <!-- ## End Examples Dependencies ## -->
 
          <!--needed to compile the bootstrap jar-->
@@ -406,7 +422,7 @@
          <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
-           <version>1.7.12</version>
+           <version>${slf4j.version}</version>
            <!-- License: MIT -->
          </dependency>
 

tests/activemq5-unit-tests/pom.xml

@@ -39,7 +39,6 @@
       <commons-net-version>3.3</commons-net-version>
       <xbean-version>3.18</xbean-version>
       <hamcrest-version>1.3</hamcrest-version>
-      <slf4j-version>1.7.10</slf4j-version>
       <jasypt-version>1.9.2</jasypt-version>
       <directory-version>2.0.0-M6</directory-version>
       <activeio-core-version>3.1.4</activeio-core-version>
@@ -213,7 +212,6 @@
       <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
-         <version>${slf4j-version}</version>
          <scope>test</scope>
       </dependency>