Update oslo-incubator gettextutils module

Changes -
 * Allow the Message class to have non-English default locales
 * Implementation of translation log handler
 * Translation Message improvements

Change-Id: Ie648c915177f88f42c75b4679456de4d15eeb43a
Update oslo-incubator service module

Changes -
 * Fix filter() usage due to python 3 compability
 * Allow configurable ProcessLauncher liveness check

Change-Id: Ia49ce98ff3b77db7be0fe258f1ca390e750c9120
Update oslo-incubator py3kcompat module

Changes -
 * Removed copyright from empty files

Change-Id: I8d8f52393353d2829040d1ca05a0e8ad2278ccd3
Update oslo-incubator db module

Changes -
 * Removed copyright from empty files

Change-Id: I8e14e7cedde79d953b9b6fde16bf341994f6e56b
Update oslo-incubator db.sqlalchemy module

Changes -
 * Fix database connection string is secret
 * Removed copyright from empty files
 * Fix the obsolete exception message

Change-Id: I12ceb6e72990ddfff43102e6b05a41cef7e27fe3