Fix reliability when KOKKOS_PROFILE_LIBRARY is set in env (#103)

* Fix reliability when KOKKOS_PROFILE_LIBRARY is set in env

- in certain situations, an exe using kokkos may be instrumented
- this will cause libomnitrace to be dlopened via libomnitrace-dl
- if KOKKOS_PROFILE_LIBRARY is set to libomnitrace and not libomnitrace-dl, you will end up with different instances of libomnitrace trying to collect data

* Set OMNITRACE_MAX_THREADS=32 in CI

.github/workflows/ubuntu-bionic.yml

@@ -88,6 +88,7 @@ jobs:
           -DOMNITRACE_PYTHON_PREFIX=/opt/conda/envs
           -DOMNITRACE_PYTHON_ENVS="py3.6;py3.7;py3.8;py3.9;py3.10"
           -DLULESH_BUILD_KOKKOS=OFF
+          -DOMNITRACE_MAX_THREADS=32
 
     - name: Build
       timeout-minutes: 60