UT: disable code coverage support for autotools

Since lcov was removed in the previous commit [1], CI script
execution failed to support autotools projects (such as libmctp):
```
checking for genhtml... no
configure: error: To enable code coverage reporting you must have lcov installed
```

This commit only disables code coverage support for autotools-based
projects.

Refer: https://github.com/openbmc/openbmc-build-scripts/issues/37

[1]: https://gerrit.openbmc.org/c/openbmc/openbmc-build-scripts/+/72544

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: Ib62a5f3092d8c6933f3b9ca00d08dbb38d91ce3a
1 file changed