tests(spread): proper setup/restore for remote-build

Initialize git and setup the repo and teardown correctly on restore.

Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>

tests/spread/general/remote-build/task.yaml

@@ -14,12 +14,21 @@ prepare: |
   fi
 
   snapcraft init
+
+  # Commit the project
+  git config --global --add safe.directory "$PWD"
+  git add snap/snapcraft.yaml
+  git commit -m "Initial Commit"
+
+  # Setup launchpad token
   mkdir -p ~/.local/share/snapcraft/provider/launchpad/
   echo -e "$LAUNCHPAD_TOKEN" >> ~/.local/share/snapcraft/provider/launchpad/credentials
 
 restore: |
   rm -f ./*.snap ./*.txt
 
+  rm -rf snap .git
+
 execute: |
   export SNAPCRAFT_REMOTE_BUILD_STRATEGY="$STRATEGY"