* Drop the iso_checksum_type & iso_checksum_url fields
In favor of simply using iso_checksum that will know what to do.
* fix after master merge
* Update builder_test.go
* Update builder_test.go
* Update builder_test.go
* Update builder_test.go
* Update builder_test.go
* remove checksum lowercasing tests
* Update builder_test.go
* Update builder_test.go
* better docs
* Update builder_test.go
* even better docs
* Update config.go
* Update builder_test.go
* Update step_create_vmx_test.go
* make generate
* better docs
* fix imports
* up tests
* Update _ISOConfig-required.html.md
* Update builder_test.go
* don't use sha1.Sum("none") as a caching path
* Update builder_test.go
* better docs
* Update iso_config_test.go
remove ISOChecksumType/ISOChecksumURL references
* Update step_download_test.go
* add iso_checksum_url and iso_checksum_type fixers + tests
* add concrete examples of checksum values
* add examples of checksumming from local file
* update go-getter dep
* up deps
* use new go-getter version
* up ESX5Driver.VerifyChecksum: use go-getter's checksumming
* ISOConfig.Prepare: get checksum there in case we need it as a string in ESX5Driver.VerifyChecksum
* Update iso_config.go
* get go-getter from v2 branch
* Update driver_esx5.go
add more comments
* Update driver_esx5.go
* show better error message when the checksum is invalid
* Update builder_test.go
put in a valid checksum to fix tests, checksum is md5("packer")
* Update builder_test.go
test invalid and valid checksum
* more test updating
* fix default md5 string to be a valid md5
* TestChecksumFileNameMixedCaseBug: use 'file:' prefix for file checksumming
* Update iso_config_test.go
* Update iso_config_test.go
* Update builder_test.go
* Update builder_test.go
* Update builder_test.go
* Update CHANGELOG.md
* Update CHANGELOG.md
* Update go.mod
* Update go.mod
* Update CHANGELOG.md
* I had to contextualise Communicator.Start and RemoteCmd.StartWithUi
NOTE: Communicator.Start starts a RemoteCmd but RemoteCmd.StartWithUi will run the cmd and wait for a return, so I renamed StartWithUi to RunWithUi so that the intent is clearer.
Ideally in the future RunWithUi will be named back to StartWithUi and the exit status or wait funcs of the command will allow to wait for a return. If you do so please read carrefully https://golang.org/pkg/os/exec/#Cmd.Stdout to avoid a deadlock
* cmd.ExitStatus to cmd.ExitStatus() is now blocking to avoid race conditions
* also had to simplify StartWithUi