update(images/build-plugins): switch default branch to main for `pl…

…ugins` repo

Signed-off-by: Leonardo Grasso <[email protected]>

images/build-plugins/on-registry-changed.sh

@@ -15,6 +15,7 @@
 GH_PROXY="${GH_PROXY:-"http://ghproxy"}"
 GH_ORG="${GH_ORG:-"falcosecurity"}"
 GH_REPO="${GH_REPO:-"plugins"}"
+GH_REPO_BRANCH="${GH_REPO_BRANCH:-"main"}"
 GH_INDEX_REPO="${GH_INDEX_REPO:-"falcoctl"}"
 GH_INDEX_REPO_BRANCH="${GH_INDEX_REPO_BRANCH:-"gh-pages"}"
 BOT_NAME="${BOT_NAME:-"poiana"}"
@@ -79,13 +80,13 @@ create_pr() {
         "https://${user}:$(cat "$1")@github.com/${GH_ORG}/${GH_REPO}" \
         "HEAD:${branch}"
 
-    echo "> creating pull-request to merge ${user}:${branch} into master..." >&2
+    echo "> creating pull-request to merge ${user}:${branch} into ${GH_REPO_BRANCH}..." >&2
     body=$'Updating README.md (automatically generated with build/registry). Made using the [build-plugins-on-registry-changed-postsubmit](https://github.com/falcosecurity/test-infra/blob/master/config/jobs/build-plugins/build-plugins.yaml) ProwJob. Do not edit this PR.\n\n/kind documentation\n\n/area documentation'
 
     pr-creator \
         --github-endpoint="${GH_PROXY}" \
         --github-token-path="$1" \
-        --org="${GH_ORG}" --repo="${GH_REPO}" --branch=master \
+        --org="${GH_ORG}" --repo="${GH_REPO}" --branch="${GH_REPO_BRANCH}" \
         --title="${title}" --match-title="${title}" \
         --body="${body}" \
         --local --source="${branch}" \