Add a constant env var for Sentry's DSN when someone wants to build A…

…gent and doesn't have access to GH secrets. (netdata#16892)

Create an interim env var of the sentry DSN, this will eventually overwrite the SENTRY_DSN which our code understands. 

Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>

.github/workflows/packaging.yml

@@ -247,7 +247,7 @@ jobs:
           docker run --security-opt seccomp=unconfined -e DISABLE_TELEMETRY=1 -e VERSION=${{ needs.version-check.outputs.version }} \
                     -e ENABLE_SENTRY=${{ matrix.bundle_sentry }} -e RELEASE_PIPELINE=${{ env.RELEASE_PIPELINE }} \
                     -e BUILD_DESTINATION=${{ matrix.distro }}${{ matrix.version }}_${{ matrix.arch }} -e UPLOAD_SENTRY=${{ env.UPLOAD_SENTRY }} \
-                    -e SENTRY_AUTH_TOKEN=${{ secrets.SENTRY_CLI_TOKEN }} -e SENTRY_DSN=${{ secrets.SENTRY_DSN }} \
+                    -e SENTRY_AUTH_TOKEN=${{ secrets.SENTRY_CLI_TOKEN }} -e NETDATA_SENTRY_DSN=${{ secrets.SENTRY_DSN }} \
                      --platform=${{ matrix.platform }} -v "$PWD":/netdata netdata/package-builders:${{ matrix.distro }}${{ matrix.version }}-v1
       - name: Save Packages
         id: artifacts