Checkout openstack-integration from master

Since stable/liberty was created, let's now checkout master to prepare
the next release (Mitaka).

Change-Id: I1ac93ebcac29b4f884cc12a6d968b9bfa1de9d16

Rakefile

@@ -58,7 +58,7 @@ task :spec_prep do
       zuul_clone_cmd += ['git://git.openstack.org', "#{repo}"]
       sh(*zuul_clone_cmd)
     else
-      sh("git clone https://git.openstack.org/#{repo} -b stable/liberty #{repo}")
+      sh("git clone https://git.openstack.org/#{repo} #{repo}")
     end
     script = ['env']
     script += ["PUPPETFILE_DIR=#{Dir.pwd}/spec/fixtures/modules"]

spec/spec_helper_acceptance.rb

@@ -38,7 +38,7 @@ RSpec.configure do |c|
         zuul_clone_cmd += "git://git.openstack.org #{repo}"
         on host, zuul_clone_cmd
       else
-        on host, "git clone https://git.openstack.org/#{repo} -b stable/liberty #{repo}"
+        on host, "git clone https://git.openstack.org/#{repo} #{repo}"
       end
 
       on host, "ZUUL_REF=#{zuul_ref} ZUUL_BRANCH=#{zuul_branch} ZUUL_URL=#{zuul_url} bash #{repo}/install_modules.sh"