feat: added regex validation to DA inputs

[iamar7]

Description

Issue: https://github.ibm.com/GoldenEye/issues/issues/15220

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[iamar7]

/run pipeline

[iamar7]

/run pipeline

[iamar7]

/run pipeline

[iamar7]

• prefix
• existing_cloud_logs_instance_crn

• existing_cos_instance_crn

• existing_cos_kms_key_crn
• existing_monitoring_crn
• existing_kms_instance_crn

[iamar7]

/run pipeline

[iamar7]

• prefix
• existing_cloud_logs_instance_crn

* `existing_cos_instance_crn` * `existing_cos_kms_key_crn` * `existing_monitoring_crn` * `existing_kms_instance_crn`

Some of the screenshots has incorrect grammer in the error_message (in not valid) which I have already corrected and updated it to (is not valid).

[terraform-ibm-modules-ops]

🎉 This PR is included in version 1.3.0 🎉

The release is available on:

• GitHub release
• v1.3.0

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