Set gtest version correctly for older cmake versions
Set gtest version correctly for older cmake versions

Signed-off-by: Knut Omang <11713df08699d99fb0dbb07f9fc4d1cc330ab584@oracle.com>

xnagireddy/googletest,gianricardo/googletest,google/googletest,empiredan/googletest,antidotcb/googletest,empiredan/googletest,google/googletest,empiredan/googletest,xnagireddy/googletest,google/googletest,antidotcb/googletest,jlanecox/googletest,antidotcb/googletest,xnagireddy/googletest,jlanecox/googletest,xnagireddy/googletest,google/googletest,gianricardo/googletest,jlanecox/googletest,jlanecox/googletest,antidotcb/googletest,gianricardo/googletest