Merge pull request #2814 from tintou/tintou/ostree-coverage

libostree: Enhance the annotation coverage

diff --cc src/libostree/ostree-bootconfig-parser.c
Simple merge

diff --cc src/libostree/ostree-kernel-args.c
Simple merge

diff --cc src/libostree/ostree-repo-commit.c
Simple merge

diff --cc src/libostree/ostree-repo-file.c
Simple merge

diff --cc src/libostree/ostree-repo-pull-verify.c
Simple merge

diff --cc src/libostree/ostree-repo-pull.c
Simple merge

diff --cc src/libostree/ostree-repo.c
Simple merge

diff --cc src/libostree/ostree-sepolicy.c
Simple merge

diff --cc src/libostree/ostree-sysroot-deploy.c
Simple merge