After upgrading Red Hat Satellite to version 6.15 Image-based provisioning fails due to invalid YAML file generation by Cloud-init

Issue

• Cloud-init generates invalid YAML file after upgrading to Red Hat Satellite 6.15.

• Image-based provisioning fails due to invalid YAML file generated by Cloud-init after upgrading to Red Hat Satellite 6.15.

• WARNING: Failed loading yaml blob. Invalid format at line 2 column 1: "while parsing a block mapping in "<unicode string>", line 2, column 1: hostname: host.example.com ... ^ expected <block end>, but found '<scalar>' in "<unicode string>", line 46, column 3: if [ -x "$PKG_MANAGER" ]; then ^"

• Failed at merging in cloud config part from part-001: empty cloud config