New CD SCC resource optional parameters

[gmarjoram]

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Relates OR Closes #0000

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'

...

[gmarjoram]

==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./ibm/service/cdtoolchain -v -run=TestAccIBMCdToolchainToolSecuritycompliance* -timeout 60m
=== RUN   TestAccIBMCdToolchainToolSecuritycomplianceDataSourceBasic
--- PASS: TestAccIBMCdToolchainToolSecuritycomplianceDataSourceBasic (26.95s)
=== RUN   TestAccIBMCdToolchainToolSecuritycomplianceDataSourceAllArgs
--- PASS: TestAccIBMCdToolchainToolSecuritycomplianceDataSourceAllArgs (25.63s)
=== RUN   TestAccIBMCdToolchainToolSecuritycomplianceBasic
--- PASS: TestAccIBMCdToolchainToolSecuritycomplianceBasic (24.44s)
=== RUN   TestAccIBMCdToolchainToolSecuritycomplianceAllArgs
--- PASS: TestAccIBMCdToolchainToolSecuritycomplianceAllArgs (37.10s)
PASS
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cdtoolchain	117.948s