Fix deploy-guide job

We cannot mix code and includes, this needs to be separated.
Use two include commands and split out the initial content to another
file.

Change-Id: I04584e301078cc851ae258525dc1c4b662ed6c28

jenkins/jobs/include/deploy-guide-pre.sh

@@ -0,0 +1,3 @@
+#!/bin/bash -xe
+VENV="deploy-guide"
+GUIDEDIR="deploy-guide"

jenkins/jobs/manuals-jobs.yaml

@@ -102,11 +102,10 @@
       - zuul-git-prep-upper-constraints
       - install-distro-packages
       - revoke-sudo
-      - shell: |
-          #!/bin/bash -xe
-          VENV="deploy-guide"
-          GUIDEDIR="deploy-guide"
-          !include-raw-escape: include/run-deploy-guide.sh
+      - shell:
+          !include-raw-escape:
+              - include/deploy-guide-pre.sh
+              - include/run-deploy-guide.sh
 
     publishers:
       - scp:
@@ -153,11 +152,10 @@
       - zuul-git-prep-upper-constraints
       - install-distro-packages
       - revoke-sudo
-      - shell: |
-          #!/bin/bash -xe
-          VENV="deploy-guide"
-          GUIDEDIR="deploy-guide"
-          !include-raw-escape: include/run-deploy-guide.sh
+      - shell:
+          !include-raw-escape:
+              - include/deploy-guide-pre.sh
+              - include/run-deploy-guide.sh
       - add-docs-root-marker:
           docsrootdir: deploy-guide/build/html/