sanitize toolName for shell variable #2194
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Summary
In pre-0.16.0 shell implementation, tool name consisting of multiple words, separated by dash, were sanitized as environment variable. I.e. for "teleport-community" we have "ASDF_TELEPORT_COMMUNITY_VERSION"
As now toolName passed to variable name unmodified which breaks certain usage scenarios. Although variable containing dash "ASDF_TELEPORT-COMMUNITY_VERSION" sometimes can be set in surrounding code, it is clumsy.
This patch restores the old behaviour.