[cf7 cli issue with host name format ] cf7 push fail if app name contains . [dot] ..but old cli version it is working properly

[parasuram-tanguturu]

Please fill out the issue checklist below and provide ALL the requested information.

• [x] I reviewed open and closed github issues that may be related to my problem.
• [x] I tried updating to the latest version of the CF CLI to see if it fixed my problem.
• [x] I attempted to run the command with CF_TRACE=1 to help debug the issue.
• [x] I am reporting a bug that others will be able to reproduce.

Describe the bug and the command you saw an issue with unable to push app if appname contains .[dot]. 'CF_TRACE=1': Host format is invalid.

What happened cf7 push is failing 'For application 'v1.testapiname': No domains exist for route v1.testapiname-appreciative-hyrax-dt.' but cf push which uses :cf version 6.40.1+85d04488a.2018-10-31 is working fine . Expected behavior cf7 push should work as cf push

Exact Steps To Reproduce Steps to reproduce the behavior; include the exact CLI commands and verbose output: (install cf cli 6th version as well 7th version)

1. Run 'cf7 push' which will use cli 7 version
2. see error
3. run 'cf push' which uses cli 6th version .it works

For application 'CF_TRACE=1': Host format is invalid. FAILED

used cli versions:
windows cli 6th: cf version 6.40.1+85d04488a.2018-10-31 cli 7th : cf7 version 7.2.0+be4a5ce2b.2020-12-10