Device mobile data is not working though mobile data status indicator shows

"H" with full signal

Fix: Do not merge the APN configures which have the same type element. If there
are multiple type elements in the confgures, they should be merge only if
there is no common set between them.

Bug:18080519
Change-Id: Ic3bf5979abdf1623ae57d7a9fc659f6c3005b869