crypto/x509: CreateCertificateRequest reads ExtraExtensions, not Extensions.
crypto/x509: CreateCertificateRequest reads ExtraExtensions, not Extensions.

Fixes #18899.

Change-Id: I6a4bf0aad9cf1dbe6691ba4e4c478fcb33c44528
Reviewed-on: https://go-review.googlesource.com/36558
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

codestation/go,derekmarcotte/go,nawawi/go,akutz/go,ImJasonH/go,josharian/go,CAFxX/go,codestation/go,Cofyc/go,akutz/go,akutz/go,derekmarcotte/go,polyverse-security/go,cloudflare/go,Cofyc/go,akutz/go,nawawi/go,linux-on-ibm-z/go,ImJasonH/go,josharian/go,codestation/go,linux-on-ibm-z/go,polyverse-security/go,golang/go,Cofyc/go,derekmarcotte/go,codestation/go,ImJasonH/go,golang/go,golang/go,vsekhar/elastic-go,linux-on-ibm-z/go,nawawi/go,nawawi/go,akutz/go,akutz/go,cloudflare/go,codestation/go,CAFxX/go,CAFxX/go,nawawi/go,vsekhar/elastic-go,Cofyc/go,ImJasonH/go,josharian/go,josharian/go,cloudflare/go,derekmarcotte/go,cloudflare/go,linux-on-ibm-z/go,Cofyc/go,cloudflare/go,Cofyc/go,ImJasonH/go,josharian/go,nawawi/go,polyverse-security/go,akutz/go,CAFxX/go,vsekhar/elastic-go,vsekhar/elastic-go,nawawi/go,polyverse-security/go,CAFxX/go,derekmarcotte/go,Cofyc/go,golang/go,polyverse-security/go,golang/go,ImJasonH/go,josharian/go,akutz/go,vsekhar/elastic-go,christopher-henderson/Go,cloudflare/go,codestation/go,josharian/go,CAFxX/go,cloudflare/go,cloudflare/go,derekmarcotte/go,CAFxX/go,josharian/go,vsekhar/elastic-go,vsekhar/elastic-go,Cofyc/go,golang/go,nawawi/go,linux-on-ibm-z/go,vsekhar/elastic-go,derekmarcotte/go,ImJasonH/go,polyverse-security/go,linux-on-ibm-z/go,codestation/go,polyverse-security/go,golang/go,derekmarcotte/go,ImJasonH/go,linux-on-ibm-z/go,linux-on-ibm-z/go,codestation/go,polyverse-security/go,golang/go,CAFxX/go