support setting 1P host for tests in testconfig.py
http/https config support for tests
support passing value for write on stdin, fix tests for cassandra update (0 vs. 0.0 thing)
fix tests for testconfig control of host, port, https
tree does not stop for locked clients, tree has --values option to show latest values
add test virtualenv directories to gitignore
add new improved tree variant: twee (for devewopers)