Address Valgrind issues in CI

Fixes "uninitialized values" errors reported by Valgrind. Problem
occurred from lack of specializations of googletest's PrintTo functions
for several custom types.

Tes

Address Valgrind issues in CI

Fixes "uninitialized values" errors reported by Valgrind. Problem
occurred from lack of specializations of googletest's PrintTo functions
for several custom types.

Tested:
On local CI container. After applying this patch issues stopped
appearing.

Change-Id: I98d9fd19724bee15add7b19422a9ddc2e4cbef09
Signed-off-by: Michal Orzel <michalx.orzel@intel.com>

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