Create unit tests for blocked data

[gold2718]

Description

In order to develop and verify capgen's ability to handle host models that use blocked data, unit tests that require this feature and can validate correct code generation should be created.

Solution

Create a host model using blocked data along with a test suite (similar to capgen_test and advection_test)

Related to #314

[climbfuji]

This is no longer needed. Blocked data structures will note be supported by capgen. What we did instead was to add support for contiguous arrays to ccpp_prebuild, and add tests for both blocked data structures and contiguous arrays. Then, we converted all host models using blocked data structures (UFS, NEPTUNE) to contiguous arrays.