pom.xml: updates for release 0.18.17
pom.xml: updates for release 0.18.17

Relax sanity checks for STANDALONE subscriptions #840
Fix JDBC connection leak in pagination API #853
Fix limitation where catalog plan name cannot end with an number #842
Reduce log level of InvoiceItemGeneratorLogger #851

Signed-off-by: Kill Bill core team <1a73af9e7ae00182733b2292511b814be66f065f@killbill.io>

sbrossie/killbill,killbill/killbill,sbrossie/killbill,killbill/killbill,sbrossie/killbill,sbrossie/killbill,sbrossie/killbill,killbill/killbill,killbill/killbill,killbill/killbill