1. Add proper path for inclusion of svc_mon_introspect.sandesh
   when calling sandesh init_generator. This changed with the console
   script change.
2. Cleanup schema transformer SConscript.
3. Remove not present sandesh directory from list of directories
   to search for when calling sandesh init_generator in api
   server.

Change-Id: Iad1a5bcaed1fde97e9e19e211d0e7dd31aaec5c3
Closes-Bug: #1352791
Merge "1. Add proper path for inclusion of svc_mon_introspect.sandesh    when calling sandesh init_generator. This changed with the console    script change. 2. Cleanup schema transformer SConscript. 3. Remove not present sandesh directory from list of directories    to search for when calling sandesh init_generator in api    server."