Unconfigiure Maven phases i.e when to generate soy files.

[penmetsaa]

Issue:

• Without the fix, mvn install OR mvn release:publish after abruptly getting ended after the log line:
  [INFO] --- exec-maven-plugin:3.1.0:java (soy-compiler) @ demo ---
• No further steps are getting executed like publishing the code to Sonatype remote account.

Cause:

• The SOY code generator classes kills the main thread that invokes them;
• this is not going well with exec-maven-plugin as it executes the main programs in its main thread synchrounusly.

After the fix, the build steps like mvn install are getting completed with success message.