Docker: Update TF-M to use new docker image

This change removes a generic image and splits out TF-A and TF-M to use
a different docker images

Change-Id: I36db13cfdffe75273f992f09d7314bd089faa60e
Signed-off-by: Benjamin Copeland <ben.copeland@linaro.org>
diff --git a/jenkins/ci.jpl b/jenkins/ci.jpl
index 4b49b72..a93edde 100644
--- a/jenkins/ci.jpl
+++ b/jenkins/ci.jpl
@@ -504,7 +504,7 @@
 def builds = [:]
 def results = [:]
 
-node("docker-amd64-bionic") {
+node("docker-amd64-tf-m-bionic") {
   stage("Init") {
     cleanWs()
     dir("tf-m-ci-scripts") {
@@ -544,7 +544,7 @@
   }
 }
 
-node("docker-amd64-bionic") {
+node("docker-amd64-tf-m-bionic") {
   stage("Copy Docs") {
     if (env.JOB_NAME.equals("tf-m-build-and-test")) {
       step([$class: 'CopyArtifact', projectName: 'tf-m-build-docs',