[DCAEGEN2-Services] Add example policy types, policies and instrucitons for policy sync

Add example policy types, policies and readme for policy sync. Modify ./gitignore to exclude intellij config file.

Issue-ID: DCAEGEN2-3195
Signed-off-by: qingshuting <qingshuting1@huawei.com>
Change-Id: Id11dac92740db98dd7ba6003e6a035e2fc16d0d7
10 files changed