Fixed error action and added example scripts

[rchristman89]

Pull Request (PR) description

Fixing the output causing Test in SqlScript to not report back errors.

Task list

• The PR represents a single logical change. i.e. Cosmetic updates should go in different PRs.
• Added an entry under the Unreleased section of in the CHANGELOG.md as per format.
• Local clean build passes without issue or fail tests (build.ps1 -ResolveDependency).
• Resource documentation added/updated in README.md.
• Resource parameter descriptions added/updated in README.md, schema.mof
  and comment-based help.
• Comment-based help added/updated.
• Localization strings added/updated in all localization files as appropriate.
• Examples appropriately added/updated.
• Unit tests added/updated. See DSC Resource Testing Guidelines.
• Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[themitchk]

Reviewed 4 of 8 files at r1.
Reviewable status: 4 of 8 files reviewed, 1 unresolved discussion (waiting on @rchristman89)

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source/Examples/Resources/PostgreSqlScript/TestSqlFiles/test.sql, line 20 at r1 (raw file):

BEGIN
IF NOT exists (SELECT * FROM information_schema.tables Where table_schema = 'public' AND table_name = 'Users')
THEN RAISE INFO 'hi';

Should Probably change this message from 'hi'.

[themitchk]

Reviewed 3 of 8 files at r1.
Reviewable status: 7 of 8 files reviewed, 1 unresolved discussion (waiting on @rchristman89)

[jcwalker]

Just one thought on the using Start-Process

[jcwalker]

Is there any benefit to using Start-Process here? When calling an .exe from PowerShell I like to use Start-Process -Wait so ensure the script will not progress until the .exe is finished. I have found in the past that PowerShell will call the .exe and then keep on going. This would also allow you to inspect the exitCode to verify success. It might also remove the requirement to change the built-in variables.

[rchristman89]

We can try it and see how it goes.

[rchristman89]

Reviewable status: 6 of 8 files reviewed, 2 unresolved discussions (waiting on @jcwalker and @themitchk)

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source/DSCResources/DSC_PostgreSqlDatabase/DSC_PostgreSqlDatabase.psm1, line 129 at r1 (raw file):

Previously, rchristman89 (Ryan Christman) wrote…

We can try it and see how it goes.

Done.

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source/Examples/Resources/PostgreSqlScript/TestSqlFiles/test.sql, line 20 at r1 (raw file):

Previously, themitchk wrote…

Should Probably change this message from 'hi'.

Done.