Adjust Tomcat Version

In case you need to adjust the version of the embedded tomcat to run you can do so by changing the runtime-dependencies:

<project>
   [...]
  <properties>
   <tomcat.version>7.0.27</tomcat.version>
   [...]
  </properties>
   [...]
  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.tomcat.maven</groupId>
          <artifactId>tomcat7-maven-plugin</artifactId>
          <version>2.1</version>
          <dependencies>
          <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-core</artifactId>
            <version>${tomcat.version}</version>
          </dependency>
          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-util</artifactId>
            <version>${tomcat.version}</version>
          </dependency>
          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-coyote</artifactId>
            <version>${tomcat.version}</version>
          </dependency>
          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-api</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jdbc</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-dbcp</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-servlet-api</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jsp-api</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper-el</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-el-api</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-catalina</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-tribes</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-catalina-ha</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-annotations-api</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-juli</artifactId>
            <version>${tomcat.version}</version>
          </dependency>

          <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-logging-juli</artifactId>
            <version>${tomcat.version}</version>
          </dependency>
          <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-logging-log4j</artifactId>
            <version>${tomcat.version}</version>
          </dependency>
          </dependencies>
        </plugin>
        [...]
      </plugins>
    </pluginManagement>
    [...]
  </build>
  [...]
</project>