Use iptables pipes in BandwidthController startup.

Most of BandwidthController startup is already using
iptables-restore, but some commands (notably listing the costly
chains so they can be flushed by flushCleanTables) still
use iptables.  Move these to use execIptablesRestoreWithOutput.

Test: netd_unit_test passes
Bug: 34873832
Change-Id: Ib0741a99a2605cd6934186fd4e5364331a4eab5a
3 files changed
tree: d609d0b49248ec9a825e10b28dc8a6fd8c88eac6
  1. client/
  2. include/
  3. server/
  4. tests/
  5. Android.mk
  6. MODULE_LICENSE_APACHE2
  7. NOTICE