Rename gomod to go-mod-tidy in makefile targets (#2103)

* Rename `gomod` to `gomodtidy` in makefile targets

We had two targets in our makefile one `gomod` and other `go-mod-download`.
By just reading `gomod` it was not clear if it's just running `go mod tidy`
or `go mod download` as well.
This commit makes that explicit by renaming gomod to gomodtidy.

* Rename makefile target `gomodtidy` to `go-mod-tidy`

* Remove unnecessary code

---------

Co-authored-by: Pavan Navarathna <6504783+pavannd1@users.noreply.github.com>

.github/workflows/main.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v3
-    - run: make gomod
+    - run: make go-mod-tidy
     - run: make go-mod-download
     - run: tar -cvf ./src.tar.gz ./ # preserve file permissions
     - uses: actions/upload-artifact@v3

Makefile

@@ -320,8 +320,8 @@ stop-kind:
 check:
 	@./build/check.sh
 
-gomod:
-	@$(MAKE) run CMD='-c "./build/gomod.sh"'
+go-mod-tidy:
+	@$(MAKE) run CMD='-c "./build/gomodtidy.sh"'
 
 
 install-crds: ## Install CRDs into the K8s cluster specified in ~/.kube/config.