Add RESCALE integer special tests

Use data generator to produce valid test data using simplified value range
Add special tests to check range of rescale
Added UINT8 and UINT16 support to generate library
Add unit tests for RESCALE and UINT8/16
Update test selection to include all input types, ranks and output types

NOTE: Changes test names of some existing tests as it will use updated
shape instead of first generated shape - POW, MUL, MINIMUM, GREATER,
LOGICAL_LEFT/RIGHT_SHIFT, BITWISE_AND/XOR are affected

Signed-off-by: Jeremy Johnson <jeremy.johnson@arm.com>
Change-Id: Iea402dfbf5a2a741947606636ee18329b797885d