update build badges

Update build badges for 0.5 branch to show 1.6 integration job results.

Signed-off-by: Tuomo Tanskanen <tuomo.tanskanen@est.tech>

README.md

@@ -2,8 +2,8 @@
 
 [![CLOMonitor](https://img.shields.io/endpoint?url=https://clomonitor.io/api/projects/cncf/metal3-io/badge)](https://clomonitor.io/projects/cncf/metal3-io)
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/metal3-io/baremetal-operator/badge)](https://securityscorecards.dev/viewer/?uri=github.com/metal3-io/baremetal-operator)
-[![Ubuntu daily main build status](https://jenkins.nordix.org/buildStatus/icon?job=metal3_daily_main_integration_test_ubuntu&subject=Ubuntu%20daily%20main)](https://jenkins.nordix.org/view/Metal3/job/metal3_daily_main_integration_test_ubuntu/)
-[![CentOS daily main build status](https://jenkins.nordix.org/buildStatus/icon?job=metal3_daily_main_integration_test_centos&subject=CentOS%20daily%20main)](https://jenkins.nordix.org/view/Metal3/job/metal3_daily_main_integration_test_centos/)
+[![Ubuntu E2E Integration 1.6 build status](https://jenkins.nordix.org/buildStatus/icon?job=metal3_daily_release-1-6_e2e_integration_test_ubuntu&subject=Ubuntu%20e2e%20integration%201.6)](https://jenkins.nordix.org/view/Metal3%20Periodic/job/metal3_daily_release-1-6_integration_test_ubuntu/)
+[![CentOS E2E Integration 1.6 build status](https://jenkins.nordix.org/buildStatus/icon?job=metal3_daily_release-1-6_e2e_integration_test_centos&subject=Centos%20e2e%20integration%201.6)](https://jenkins.nordix.org/view/Metal3%20Periodic/job/metal3_daily_release-1-6_integration_test_centos/)
 
 The Bare Metal Operator implements a Kubernetes API for managing bare metal
 hosts. It maintains an inventory of available hosts as instances of the
@@ -46,6 +46,13 @@ development. Here are the tests which run on different branches in BMO:
 * **/test-ubuntu-integration-main** runs ansible integration tests with CAPM3
   main branch and BMO **main** branch on Ubuntu
 
+**Release-0.5 branch:**
+
+* **/test-centos-e2e-integration-release-1-6** runs CAPM3 e2e integration tests
+  with CAPM3 release-1.6 branch and BMO **release-0.5** branch on Centos
+* **/test-ubuntu-integration-release-1-6** runs ansible integration tests with
+  CAPM3 release-1.6 branch and BMO **release-0.5** branch on Ubuntu
+
 **Release-0.4 branch:**
 
 * **/test-centos-e2e-integration-release-1-5** runs CAPM3 e2e integration tests