Remove traling spaces in yaml files

After patch Ia2498bdb0f7c310ec3d2c2f11f5d3fc08c8b352c now is possible to
run check for yaml and shell syntax.
This patch is oriented to fix some similar error reported in yaml
syntax check.

Change-Id: Ia669cf4192eafb2b733f3862c3b67cdf38c10692

murano-apps/HAProxyListener/package/UI/ui.yaml

@@ -34,7 +34,7 @@ Forms:
           initial: '*'
           label: Listener address
           required: false
-        - name: algorithm 
+        - name: algorithm
           type: string
           label: Algorithm of balancing
           initial: 'roundrobin'
@@ -46,4 +46,4 @@ Forms:
           label: Protocol
         - name: loadBalancer
           type: org.openstack.murano.lbaas.HAProxy
-          label: Load Balancer 
+          label: Load Balancer

murano-apps/Zuul/package/Classes/Zuul.yaml

@@ -107,7 +107,7 @@ Methods:
       - $script: $resources.string('scripts/switch_to_local_project_config.sh')
       - $._environment.reporter.report($this, '[Zuul] Switching to project-config from installed Gerrit...')
       - $projectConfigURL: format(
-          'ssh://{0}@{1}:29418/open-paas/project-config', 
+          'ssh://{0}@{1}:29418/open-paas/project-config',
           $.instance.getHieraValue('gerrit_user'),
           $.instance.getHieraValue('gerrit_server')
          )