pom.xml: updates for release 0.19.15
Fix issue in usage billing (DETAIL mode)
Catalog endpoints enhancements
Merge fix from 0.18.x to allow to change to a plan defined in a subsequent catalog version
+0.19.15
+ Fix issue in usage billing (DETAIL mode)
+ Catalog endpoints enhancements
+ Merge fix from 0.18.x to allow to change to a plan defined in a subsequent catalog version
+
0.19.14
Expose and persist invoice item product name
New history apis
