.tekton: switch to dedicated SA

We change the Service Account used by build pipeline from
"appstudio-pipeline" to dedicated to the Component Service Account.

Author: joelcapitao

.tekton/coreos-assembler-pull-request.yaml

@@ -53,6 +53,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/coreos-assembler-push.yaml

@@ -50,6 +50,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/kola-nfs-pull-request.yaml

@@ -55,6 +55,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/kola-nfs-push.yaml

@@ -51,6 +51,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/kola-tang-pull-request.yaml

@@ -55,6 +55,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/kola-tang-push.yaml

@@ -51,6 +51,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/kola-targetcli-pull-request.yaml

@@ -55,6 +55,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret:

.tekton/kola-targetcli-push.yaml

@@ -51,6 +51,8 @@ spec:
     - name: kind
       value: pipeline
     resolver: bundles
+  taskRunTemplate:
+    serviceAccountName: build-pipeline-coreos-assembler
   workspaces:
   - name: git-auth
     secret: