chore(trivy): update trivy version and enforce OCI compliant repo names in local image storage (#1068)

1. chore(trivy): update trivy library version

The trivy team switched github.com/urfave/cli for viper so
there are some other code changes as well.

Since we don't use github.com/urfave/cli directly in our software
we needed to add a tools.go in order for "go mod tidy" to not delete it.
See this pattern explained in:
- https://github.com/99designs/gqlgen#quick-start
- https://github.com/golang/go/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module
- https://github.com/go-modules-by-example/index/blob/master/010_tools/README.md#walk-through

The jobs using "go get -u" have been updated to use "go install", since go get
modifies the go.mod by upgrading some of the packages, but downgrading trivy to an older
version with broken dependencies

2. fix(storage) Update local storage to ignore folder names not compliant with dist spec
Also updated trivy to download the DB and cache results under the rootDir/_trivy folder

3. fix(s3): one of the s3 tests was missing the skipIt call
This caused a failure when running locally without s3 being available

4. make sure the offline scanning is enabled, and zot only downloads the trivy DB
on the regular schedule, and doesn't download the DB on every image scan

ci: increase build and test timeout as tests are reaching the limit more often

Signed-off-by: Andrei Aaron <aaaron@luxoft.com>

.github/workflows/ci-cd.yml

@@ -87,7 +87,7 @@ jobs:
           AWS_ACCESS_KEY_ID: fake
           AWS_SECRET_ACCESS_KEY: fake
       - name: Run build and test
-        timeout-minutes: 60
+        timeout-minutes: 70
         run: |
           echo "Building for $OS:$ARCH"
           cd $GITHUB_WORKSPACE

.github/workflows/cluster.yaml

@@ -34,7 +34,7 @@ jobs:
       - name: Install dependencies
         run: |
           cd $GITHUB_WORKSPACE
-          go get -u github.com/swaggo/swag/cmd/swag
+          go install github.com/swaggo/swag/cmd/swag
           go mod download
           sudo apt-get update
           sudo apt-get -y install rpm uidmap

.github/workflows/ecosystem-tools.yaml

@@ -23,7 +23,7 @@ jobs:
       - name: Install dependencies
         run: |
           cd $GITHUB_WORKSPACE
-          go get -u github.com/swaggo/swag/cmd/swag
+          go install github.com/swaggo/swag/cmd/swag
           go mod download
           sudo apt-get update
           sudo apt-get install libgpgme-dev libassuan-dev libbtrfs-dev libdevmapper-dev pkg-config rpm uidmap