Add python-bsddb3 to ubuntu-precise; resolves travis-ci/apt-package-whitelist#2108
Add python-bsddb3 to ubuntu-precise; resolves travis-ci/apt-package-whitelist#2108

Packages: python-bsddb3 python-bsddb3-dbg python3-bsddb3 python3-bsddb3-dbg python-bsddb3-doc

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist