Fixed PEM file ownership and mode

Fixed PEM file ownership and mode

Update Dockerfile step-cli version to 0.26.0

Full Changelog: iconicompany/autocert@v1.1.0...v1.2.0

Support for PEM certificate format (crt + key)

Support for PEM certificate format (crt + key)

autocert with initial p12 support

autocert with initial p12 support in bootstrapper and renewer
also move step ca root $STEP_ROOT to beginning of script