adding yum command to eliminate warning about old cache

Author: robertpatrick

wercker.yml

@@ -9,6 +9,7 @@ build:
       - script:
         name: Install pre-reqs
         code: |
+          yum makecache fast
           yum -y install tar gzip procps
       - java/maven:
         maven_opts: -Dunit-test-wlst-dir=/u01/oracle/oracle_common/common/bin -Dsonar.login=${SONAR_LOGIN} -Dsonar.password=${SONAR_PASSWORD} -Dsonar.host.url=${SONAR_HOST}