spread.yaml: simplify the project path

The original project path implicitly relied on the pre-modules semantics
of Go source code layout, where the default GOPATH ~/go contained all
the source code arranged in go import path directories.

Since we rely on Go modules, we don't need this structure and can build
from any location.

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>

spread.yaml

@@ -18,7 +18,7 @@ backends:
                 password: ubuntu
 
 # Set spread project path to the correct place under GOPATH
-path: /root/go/src/booting.oniroproject.org/distro/components/sysota
+path: /root/sysota
 
 exclude:
   # Exclude .cache which is used by GitLab CI jobs to bring in the qemu image.