servenv: support for lameduck-period
Merge branch 'master' into monitoring
test env fix
Merge branch 'master' of github.com:youtube/vitess
servenv: Add comments to functions.
servenv: reduce default lameduck period

Since most tests don't set lameduck period, a high value will
most likely break them all. So, it's good to set this to something
very small.
Merge branch 'master' into monitoring
servenv: move some code around

Better reuse on import
Revert "test env fix"

This reverts commit 012f11c295a51429c553a7066f73204602b71b37.
Tear down the environment only once for querysevice_test.py.