replace run_cmd with run_shell_cmd in custom easyblock for OpenSSL / OpenSSL_wrapper (openssl.py and openssl_wrapper.py)

[branfosj]

(created using eb --new-pr)

• no use of EB_OpenSSL in blocks
• no use in easyconfigs outside of wrapped OpenSSL

[branfosj]

Test report by @branfosj

Overview of tested easyconfigs (in order)

• SUCCESS OpenSSL-1.1.eb
• SUCCESS OpenSSL-1.1.1q-GCCcore-10.3.0.eb
• FAIL (build issue) OpenSSL-1.1.1n-GCCcore-11.3.0.eb (partial log available at https://gist.github.com/branfosj/f774ebe0317ed7b5b79eab554934a71b)

Build succeeded for 2 out of 3 (3 easyconfigs in total)
bear-pg0105u03a - Linux RHEL 8.6, x86_64, Intel(R) Xeon(R) Platinum 8360Y CPU @ 2.40GHz (icelake), Python 3.6.8
See https://gist.github.com/branfosj/b1955cd49b632dd9689d0656899176cf for a full test report.

[boegel]

Test report by @boegel

Overview of tested easyconfigs (in order)

• SUCCESS OpenSSL-1.1.1q-GCCcore-10.3.0.eb
• SUCCESS OpenSSL-1.1.eb
• SUCCESS OpenSSL-1.0.eb

Build succeeded for 3 out of 3 (3 easyconfigs in total)
node3557.doduo.os - Linux RHEL 8.8, x86_64, AMD EPYC 7552 48-Core Processor, Python 3.6.8
See https://gist.github.com/boegel/03e944bdfe1d8180240d5effea0dc27a for a full test report.