Fix policy format with vCPE service

Fix policy format with vCPE service

. change the capital and lower-case letter
. add missing fields in ConfigBody policyName and templateVersion
that are requried by OOF
. add '=' into default operator once no such info in the input CSAR
. based on the vCPE service, which includes several CPs, some may do
NOT connect any VDU. so need deal with such case.
. add new test case to cover complicated service includes 5 policies
. change the resource's type from String to List as requried by OOF
which needs such format to deal with all kind of policies beides hpa
. improve the code style

Change-Id: Id39b1a0511c362c5ae9dce409af18b032832de80
Issue-ID: POLICY-1282
Signed-off-by: liboNet <libo.zhu@intel.com>
(cherry picked from commit 987cb61f269572fec7c0b0fe500f081ca36c2dd9)