Adds sleep to allow Tomcat to start fully

Adds a sleep command before running the curl command.
This ensures Tomcat has fully started before the test attempts
to access the application, preventing intermittent test failures.

Relates to CAT-2396

Author: david22swan

spec/acceptance/acceptance_1b_spec.rb

@@ -126,6 +126,7 @@ class jsvc {
     end
 
     it 'is serving a page on port 80', retry: 5, retry_wait: 10 do
+      sleep 240 # allow tomcat to fully start
       run_shell('curl --retry 10 --retry-delay 15 localhost:80/war_one/hello.jsp') do |r|
         expect(r.stdout).to match(%r{Sample Application JSP Page})
       end