Merge pull request #485 in CASA/casa6 from CAS-13628 to master
* commit 'd04d8bbc9132aa88798a20822bd79f2f50627587': CAS-13628: Add test for Dysco support CAS-13628 Enable Dysco storage manager
Merge pull request #487 in CASA/casa6 from CAS-13676 to master
* commit '6af834bc97da812177f861d5fcc206455219b9c3':
Revert Bash which to type mods
Remove File::Which Perl import from xml-casa
Replace which with "type -p" in xml-casa
Replace the rest of the which commands in configure.ac
Change "which" to "type" in configure.ac
Use type instead of which in mod-closure
changes to support anaconda build on RHEL8 (CAS-13676)
move grpc check after cfitsio (reason?) (CAS-13676)
add --enable-system-grpc configure flag to allow building with external grpc (CAS-13676)