fix tower-expect -> awx-expect for isolated tower builds

awx/playbooks/check_isolated.yml

@@ -10,7 +10,7 @@
   tasks:
 
     - name: Determine if daemon process is alive.
-      shell: "tower-expect is-alive {{src}}"
+      shell: "awx-expect is-alive {{src}}"
       register: is_alive
       ignore_errors: true
 

awx/playbooks/clean_isolated.yml

@@ -11,7 +11,7 @@
   tasks:
 
     - name: cancel the job
-      command: "tower-expect stop {{private_data_dir}}"
+      command: "awx-expect stop {{private_data_dir}}"
       ignore_errors: yes
 
     - name: remove build artifacts

awx/playbooks/run_isolated.yml

@@ -29,7 +29,7 @@
       command: "mkfifo {{src}}/env"
 
     - name: spawn the playbook
-      command: "tower-expect start {{src}}"
+      command: "awx-expect start {{src}}"
 
     - name: write the secret environment data
       mkfifo: