gunit: Promote namespaces in test 001 and 013 to heap variables

gunit: Promote namespaces in test 001 and 013 to heap variables

On one of my ubuntu22 machines, the NAMESPACE5[] character array was
outputing garbage for the last test.  Looks like gtest was running it in
another thread, and the pointer was garbage.  Promote the NAMESPACE*
variables to be heap variables so that they're safely available for all
threads.

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
Acked-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>