tree 5b1aaca23223c7244f0e296ac2628e23d67a5e57
parent 1bc828c97ecc4cd4b681cb656d5db7096269d746
author Jim Tang <jimtang@google.com> 1564044867 +0800
committer Jim Tang <jimtang@google.com> 1565054244 +0800

Filter out VENDOR_PYTHONPATH from PYTHONPATH in aosp.

Currently when switching between internal to aosp, PYTHONPATH will be
contaminated. This CL is to ensure PYTHONPATH will be as clean as
opening a new terminal and source/lunch.

Bug: 121106770

Test: internal:
$ source build/envsetup.sh; lunch; echo $PYTHONPATH| sed 's/:/\n/g'
will see VENDOR_PYTHONPATH in PYTHONPATH.

switch to aosp:
$ source build/envsetup.sh; lunch; echo $PYTHONPATH| sed 's/:/\n/g'
won't see VENDOR_PYTHONPATH in PYTHONPATH.

Change-Id: Id1916673000ee3fad55e9611d0c47cc80de86645