ceph.spec.in: turn jaeger off by default for SUSE distros

ceph.spec.in: turn jaeger off by default for SUSE distros

Building with jaeger by default pulls in opentelemetry, and
cmake/modules/BuildOpentelemetry.cmake tries to go get
https://github.com/ideepika/opentelemetry-cpp.git at build
time, which doesn't work on SUSE's build service (no internet
access at build time).  Also, since WITH_JAEGER now defaults
to ON in CMakeLists.txt, we need to flip the logic when
setting -DWITH_JAEGER.

Fixes: 644c99826d73174e6609aa24b7297443358488b1
Fixes: 7be8be63501ba03da9b705238a9d3d3a518969ab
Signed-off-by: Tim Serong <tserong@suse.com>