dca: provide the major version (#36510)

Author: chouquette

.gitlab/binary_build/cluster_agent.yml

@@ -9,7 +9,7 @@
     - !reference [.retrieve_linux_go_deps]
   script:
     - dda inv -- check-go-version
-    - dda inv -- -e cluster-agent.build
+    - dda inv -- -e cluster-agent.build --major-version "$AGENT_MAJOR_VERSION"
   artifacts:
     paths:
       - $CLUSTER_AGENT_BINARIES_DIR/datadog-cluster-agent
@@ -23,6 +23,7 @@
     KUBERNETES_MEMORY_REQUEST: "8Gi"
     KUBERNETES_MEMORY_LIMIT: "8Gi"
     KUBERNETES_CPU_REQUEST: 6
+    AGENT_MAJOR_VERSION: 7
 
 cluster_agent-build_amd64:
   extends: .cluster_agent-build_common

tasks/cluster_agent.py

@@ -35,6 +35,7 @@ def build(
     development=True,
     skip_assets=False,
     policies_version=None,
+    major_version='7',
 ):
     """
     Build Cluster Agent
@@ -53,6 +54,7 @@ def build(
         race,
         development,
         skip_assets,
+        major_version=major_version,
     )
 
     if policies_version is None:

tasks/cluster_agent_helpers.py

@@ -21,6 +21,7 @@ def build_common(
     development,
     skip_assets,
     go_mod="readonly",
+    major_version="7",
 ):
     """
     Build Cluster Agent
@@ -31,7 +32,7 @@ def build_common(
     build_tags = get_build_tags(build_include, build_exclude)
 
     # We rely on the go libs embedded in the debian stretch image to build dynamically
-    ldflags, gcflags, env = get_build_flags(ctx, static=False)
+    ldflags, gcflags, env = get_build_flags(ctx, static=False, major_version=major_version)
 
     cmd = "go build -mod={go_mod} {race_opt} {build_type} -tags '{build_tags}' -o {bin_name} "
     cmd += "-gcflags=\"{gcflags}\" -ldflags=\"{ldflags}\" {REPO_PATH}/cmd/cluster-agent{suffix}"