refs #4: move heap size configuration into WebSphereConfiguration.
refs #4: merge CommonWASConfiguration into WebSphereConfiguration.
refs #4: merge configuration about shared library and global security to WebSphereConfiguration.
refs #4: merge configuration about profile to WebSphereConfiguration.
refs #4: merge configuration about JDBC provider to WebSphereConfiguration.
refs #4: merge configuration about data source to WebSphereConfiguration.
refs #4: merge WebSphere profile configuration feature to CLI.
refs #4: remove needless complexity.
close #4: Merge branch '4-combine-was-configuration'