Add is hybrid flag to application install request

Add is hybrid flag to application install request

"IsHybrid" is introduced to distinguish between different
types of packages. Hybrid package assumes, that applications
inside it can have different privileges, so they should be
labeled separately. Any other package will have all applications
labeled the same and label will be generated from package name.
This commit does not yet interpret this flag, apart from db,
From now on db will accept only applications from the same package,
which have the same setting of isHybrid flag.

Change-Id: Ic94d2147fa9684279d8b8a41ad6ee99b555cd766