Fix create-domain with a custom master password

[OndroMih]

• Fixes Command create-domain --savemasterpassword=true failed #25883

The problem was that the command expected the truststore file exists when setting a custom password. The fix is to set the password only if the truststore file exists (e.g. is part of the domain template), otherwise rely on creating the truststore when copying certificates from the keystore.

I also fixed the case, when the provided password is too short. Keytool exists with 0 in that case and GlassFish failed later because the keystore wasn't created, without reporting any error about the password. Now the output contains an error message from keytool, such as:

Invalid password, try again with a different password.( KeyTool command failed with exit code: 0 and output: Enter keystore password: Keystore password is too short - must be at least 6 characters Enter keystore password: Keystore password is too short - must be at least 6 characters Enter keystore password: Keystore password is too short - must be at least 6 characters Too many failures - try later
)

[OndroMih]

Moving to draft because @dmatej will raise a new PR which also fixes this. I will then rebase this PR.

[dmatej]

It looks well, funny is that you fixed completely different thing than me, so I will just add my commit to your PR and resolve conflicts. Most of the #26037 is about host names, just the first commit was related to the master password, then I noticed that some things related smell and started learning OS specific behaviors, combinations of domain name resolution ... and following problems caused by NetUtils decisions made based on unexpected situations.