oeqa/runtime: space needed

Messages are currently being printed as:
	Test requires dropbear, oropenssh-sshd to be installed
but should be
	Test requires dropbear, or openssh-sshd to be installed
Adding the space after the 'or' corrects this.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>