Fix syntax error on if else statement

This commit fixes an simple syntax error on an else statement causing
it to crash instead of eval. Clearly someone has been writing too much
python and not enough bash.

Change-Id: I81d2324abd17790dc4790147f210ad7d9f0db74b

Author: mtreinish

lib/tempest

@@ -555,7 +555,7 @@ function configure_tempest {
     if [[ $TEMPEST_USE_TEST_ACCOUNTS == "True" ]]; then
         if [[ $TEMPEST_HAS_ADMIN == "True" ]]; then
             tempest-account-generator -c $TEMPEST_CONFIG --os-username $ADMIN_USERNAME --os-password $ADMIN_PASSWORD --os-tenant-name $ADMIN_TENANT_NAME -r $TEMPEST_CONCURRENCY --with-admin etc/accounts.yaml
-        else:
+        else
             tempest-account-generator -c $TEMPEST_CONFIG --os-username $ADMIN_USERNAME --os-password $ADMIN_PASSWORD --os-tenant-name $ADMIN_TENANT_NAME -r $TEMPEST_CONCURRENCY etc/accounts.yaml
         fi
         iniset $TEMPEST_CONFIG auth allow_tenant_isolation False