from: toolkit-maven-plugin
to: common
evidence:
 - file: "toolkit-maven-plugin/src/main/java/org/apache/servicecomb/toolkit/plugin/VerifyMojo.java"
   contains "import org.apache.servicecomb.toolkit.common.ContractComparator;"

from: toolkit-maven-plugin
to: common
evidence:
 - file: "toolkit-maven-plugin/src/main/java/org/apache/servicecomb/toolkit/plugin/GenerateMojo.java"
   contains "import org.apache.servicecomb.toolkit.common.FileUtils;"