Added support for n-x release (#304)

Author: harishp8889

.github/workflows/release.yaml

@@ -14,11 +14,40 @@ on:  # yamllint disable-line rule:truthy
           - major
           - minor
           - patch
+          - n-1/n-2 patch (Provide input in the below box)
+      version:
+        description: "Patch version to release. example: 2.1.x (Use this only if n-1/n-2 patch is selected)"
+        required: false
+        type: string
 jobs:
+  process-inputs:
+    name: Process Inputs
+    runs-on: ubuntu-latest
+    outputs:
+      processedVersion: ${{ steps.set-version.outputs.versionEnv }}
+    steps:
+      - name: Process input
+        id: set-version
+        shell: bash
+        run: |
+          if [[ "${{ github.event.inputs.version }}" != "" && "${{ github.event.inputs.option }}" == "n-1/n-2 patch (Provide input in the below box)" ]]; then
+            # if both version and option are provided, then version takes precedence i.e. patch release for n-1/n-2
+            echo "versionEnv=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+
+          if [[ "${{ github.event.inputs.option }}" != "n-1/n-2 patch (Provide input in the below box)" ]]; then
+            # if only option is provided, then option takes precedence i.e. minor, major or patch release
+            echo "versionEnv=${{ github.event.inputs.option }}" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+          # if neither option nor version is provided, then minor release is taken by default (Auto-release)
+          echo "versionEnv=minor" >> $GITHUB_OUTPUT
   csm-release:
+    needs: [process-inputs]
     uses: dell/common-github-actions/.github/workflows/csm-release-driver-module.yaml@main
     name: Release CSM Drivers and Modules
     with:
-      version: ${{ github.event.inputs.option }}
+      version: "${{ needs.process-inputs.outputs.processedVersion }}"
       images: 'csi-unity'
     secrets: inherit