Fix incomplete translation of "Update members" widget

Marks the default value for the search fields of the "Update members"
widget translatable. Also updates the English PO file accordingly.

Change-Id: I8c317de49087b4207bcb774dd241fd1e4591882b
Closes-Bug: #1239927
Add filtering parameters to list requests

This patch set adds filtering parameters to some
methods in "lbaas.py" and "vpnaas.py".

Fixes bug 1240479

Change-Id: I288c3c9138e42c4ac7cd16c6bd0b5586374c5f38
Merge "Add filtering parameters to list requests"
Updated from global requirements

Change-Id: Ic192a312394765968eb9bc59c940d5e006ae1f17
Merge "Fix incomplete translation of "Update members" widget"
Merge "Updated from global requirements"