Fixed: bootstrap.sh cannot filter the OpenRDK version key out correctly.

When running ./bootstrap.sh, it will print the error message:
"./bootstrap.sh: line 138: [: too many arguments"

This fix correct it by filtering out the OpenRDK Runtime Environment line.

Fixes #2179
Merge pull request #2180 from kevin-xu/kevin-xu-branch

Fixed: bootstrap.sh cannot filter the OpenRDK version key out correctly.