Post-installation subscripts

The post-installation script izp-post-install.sh calls a number of subscripts. Following table describes each script with its purpose and its authority levels.

Script	Purpose	Authorization needed	Comments	Promote UMS to the next environment
`izp-encrypt-dba.sh`	Update/save encrypted DBA user ID and password	`CONTROL` on `SO.<TOKEN>`; `WRITE` on `IZP_UMS_VARDIR`	Store initial password. Update password when needed.	Will likely need to be run on next environment assuming `DBAuser` password is different.
`install/izp-import-certs.sh`	Import SSL certificate to be used for UMS server	`WRITE` on `IZP_UMS_VARDIR`	Add certificate to allow UMS to connect to ZSS.	Will likely need to be run on next environment unless the same certificate is used.
`install/izp-post-install-copies.sh`	Copy to MVS™ data sets; modify JCL for started task and other jobs with variable substitution, copy those JCLs to MVS data sets (`PROCLIB`, `JOBLIB`)	`DATASET CREATE` in `<RUNHLQ>`; `WRITE` on those data sets; `WRITE` on `<RUNHLQ>.JCLLIB`	Copy pax file contents from USS to data sets; modify JCL files and copy to `<RUNHLQ>.JCLLIB`	Optional, but recommended, even if you copy the `SIZP*` data sets, in order to get the path substitutions on the JCLs.
`install/izp-update-zowe.sh`	Update Zowe configuration	`WRITE` to ZOWE_INSTANCE_DIR/instance.env	Adds variables to instance.env to affect Zowe processing.	Need to run on next environment unless changes to <zowe_instance>/instance.env are manually added.
`install/izp-install-plugins.sh`	Install Zowe plug-ins	`WRITE` to Zowe data sets and `ZOWE_INSTANCE_DIR`	Provides UMS plug-ins to Zowe, both internal authentication and data discovery, and the user accessible application.	Need to run on next environment.
`izp-gen-cacerts.sh`	Create truststore with z/OSMF certificate	Authority to run commands to extract CA certificate from SAF; `WRITE` on `IZP_UMS_VARDIR`	Add certificate to allow UMS to connect to z/OSMF.	Will likely need to be run on next environment unless the same certificate or CA is used.
`install/izp-update-apiml-config.sh`	Register UMS with Zowe API ML	Write to `IZP_UMS_VARDIR`	Optional: sets up API ML use.	Need to run if you want to register UMS with API ML.
`install/izp-uss-grp.sh`	Change ownership of files in UMS installation	`OWNER` of `IZP_UMS_VARDIR`	Ensure both installer and STC has appropriate access to zFS files.	Need to run unless file ownership and permissions are taken care of manually.
`izp-apf-req-ds.sh`	To APF authorize `IZP_LOADLIB`	Ability to APF authorize load modules.	May need to run for each IPL. The job `IZPAPFDS` will call this script. It uses the value of `IZP_UMS_ALL_SYSNAMES`.	Only if IPL was run.