Add http OPTIONS support for resources

As well as by apar PH16992 for V5.4 and V5.5, this RFE is satisfied by CICS Transaction Server for z/OS V5.6 which is Generally Available today 12th June 2020.
For more information see the CICS TS V5.6 Knowledge Center https://www.ibm.com/support/knowledgecenter/SSGMCP_5.6.0/whats-new/externals.html

This RFE is alsosatisfied by CICS Transaction Server for z/OS V5.6 which is announced today 7th April 2020 and which has a planned availability date of 12th June 2020.
For more information see the CICS TS V5.6 announcement letter
https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/7/897/ENUS220-077/index.html&request_locale=en

Support for HTTP OPTIONS is provided by apar PH16992 on CICS TS 5.4 and CICS TS 5.5. It is enabled via a feature toggle com.ibm.cics.http.options.handler={program_name}, where program name is the name of an options handler program that will handle the request. CICS provides a sample options handler program DFHWBOPT.

In the next release beyond CICS TS 5.5, the feature toggle will be removed and options handling will be activated via a new parameter on a TCPIPSERVICE definition.

This is something we would like to address. The RFE is being moved into 'Planned for Future release' status. Please note:
IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion. Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.

We also see a high number of DFHWB0762 /HTTP 405s in our logs in Development and Production due to Microsoft Office Protocol Discovery on client workstations submitting the OPTIONS method on the path to see if they would have write access to the location. As we have no way to control client workstations, ideally CICS should be enhanced to support the OPTIONS method for paths, not just the server's root wildcard. Suboptimally, providing anoption to suppress DFHWB0762 from certain user agents or other variables could be a Band-Aid until full OPTIONS support is available.

Due to processing by IBM, this request was reassigned to have the following updated attributes:
Brand - Servers and Systems Software
Product family - Transaction Processing
Product - CICS Transaction Server

For recording keeping, the previous attributes were:
Brand - WebSphere
Product family - Transaction Processing
Product - CICS Transaction Server

This is aa candidate for a future release