Rename log_path and generate-log-url

Make log_path zuul_log_path because log_path is rather generic.

Rename generate-log-url to set-zuul-log-path-fact to make it
clearer what it does.

Change-Id: I91ae1e396b3ef04939edebaeea8e5b16cc50315a

roles/emit-job-header/tasks/main.yaml

@@ -1,7 +1,10 @@
+- include_role:
+    name: set-zuul-log-path-fact
+
 - debug:
     msg: "Job {{ zuul.job }} triggered from {{ zuul.change_url }}"
   when: zuul.change_url is defined
 
 - debug:
-    msg: "At completion, logs for this job will be availble at "{{ zuul_log_url }}/{{ log_path }}"
-  when: zuul_log_url is defined and log_path is defined
+    msg: "At completion, logs for this job will be availble at "{{ zuul_log_url }}/{{ zuul_log_path }}"
+  when: zuul_log_url is defined and zuul_log_path is defined

roles/set-zuul-log-path-fact/README.rst

@@ -0,0 +1 @@
+Sets a fact named ``zuul_log_path`` from zuul variables

roles/upload-logs/tasks/main.yaml

@@ -1,9 +1,9 @@
 - include_role:
-    name: generate-log-url
+    name: set-zuul-log-path-fact
 
 - name: Create log directories
   file:
-    path: "{{zuul_logserver_root}}/{{ log_path }}"
+    path: "{{zuul_logserver_root}}/{{ zuul_log_path }}"
     state: directory
     recurse: yes
     mode: 0775
@@ -11,7 +11,7 @@
 - name: Upload logs to log server
   synchronize:
     src: "{{ zuul.executor.log_root }}/"
-    dest: "{{zuul_logserver_root}}/{{ log_path }}/"
+    dest: "{{zuul_logserver_root}}/{{ zuul_log_path }}/"
     rsync_opts:
       - "--exclude=job-output.txt"
   no_log: true
@@ -25,7 +25,7 @@
 - name: Upload console log
   synchronize:
     src: "{{ zuul.executor.log_root }}/job-output.txt.gz"
-    dest: "{{zuul_logserver_root}}/{{ log_path }}/job-output.txt.gz"
+    dest: "{{zuul_logserver_root}}/{{ zuul_log_path }}/job-output.txt.gz"
     verify_host: true
 
 - name: Return log URL to Zuul
@@ -33,5 +33,5 @@
   zuul_return:
     data:
       zuul:
-        log_url: "{{ zuul_log_url }}/{{ log_path }}/"
+        log_url: "{{ zuul_log_url }}/{{ zuul_log_path }}/"
   when: zuul_log_url is defined