fix: install faas-cli as a seperate CI step

Run faas-cli install in it's own step to because this will install it
into the users PATH for us and the setup/verify script will
intelligently skip the faas-cli install step. This avoids a bug where
the script assumes that the cli was installed into the tmp dir instead
of the PATH.

Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>

.github/workflows/only-ci.yaml

@@ -13,5 +13,7 @@ jobs:
       - uses: actions/checkout@master
         with:
           fetch-depth: 1
+      - name: Setup faas-cli
+        run: curl -sSL https://cli.openfaas.com | sh
       - name: Make all
         run: make all