minor changes to the common repo (#343)

* Update variables.md

* Marty updated two scripts

These are the scripts used in the adb-dcat workshop that Marty updated.

* updates to Marty's two scripts

we don't need the add_adb_user procedure since it's now part of the workshop package. There were two copies of the standalone procedure, so I deleted both per Marty's instructions.

* Update load-analyze-rest.md

* adding common cleanup task

* add a building block to the common repo

* changed date in common block

* Update cleanup.md

* test common tasks

* Update generate-rsa-key-pair.md

* Update generate-rsa-key-pair.md

* formatting the new common task

* Update generate-rsa-key-pair.md

* Update cleanup.md

* Updated common from clone

* deleted a duplicate note from oac provision common block

* Update load-analyze-rest.md

* updates to common

* update common tasks

* Update provision-body.md

* added header fields

* update the provision-body.md common task

* updating common task

* hid the tenancy name

* more updates to common tasks

* changes to the building blocks

* update common

* corrections to the common repo

* more changes to common

* final building blocks changes

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Co-authored-by: Dan Wiliams <[email protected]>