qemu: Add QEMU 2.10 x86_64 the generated capabilities

For reference, these were generated by updating a local qemu git
repository to the latest upstream, making sure the latest dependencies
were met via "dnf builddep qemu" from my sufficiently privileged root
account, checking out the v2.10.0 tag, and building in order to generate
an "x86_64-softmmu/qemu-system-x86_64" image.

Then using a clean libvirt tree updated to master and built, the image
was then provided as input:

    tests/qemucapsprobe /path/to/x86_64-softmmu/qemu-system-x86_64 > \
       tests/qemucapabilitiesdata/caps_2.10.0.x86_64.replies

With the .replies file in place and the DO_TEST line added and build,
then running the following commands:

    touch tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
    VIR_TEST_REGENERATE_OUTPUT=1 ./tests/qemucapabilitiestest

to generate tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml and both
were added to the commit.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Reviewed-by: NPavel Hrdina <phrdina@redhat.com>

tests/qemucapabilitiestest.c

@@ -170,6 +170,7 @@ mymain(void)
     DO_TEST("x86_64", "caps_2.7.0");
     DO_TEST("x86_64", "caps_2.8.0");
     DO_TEST("x86_64", "caps_2.9.0");
+    DO_TEST("x86_64", "caps_2.10.0");
     DO_TEST("aarch64", "caps_2.6.0-gicv2");
     DO_TEST("aarch64", "caps_2.6.0-gicv3");
     DO_TEST("ppc64le", "caps_2.6.0");