Add aliases for string methods

[shwina]

Adds the aliases hex_to_int (and for consistency, ip_to_int) for the htoi and ip2int methods respectively. hex_to_int is a little less cryptic and this helps searchability in the docs.

[galipremsagar]

rerun tests

[codecov]

Codecov Report

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@@               Coverage Diff               @@
##             branch-21.06    #8353   +/-   ##
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  Files                   ?      105           
  Lines                   ?    17877           
  Branches                ?        0           
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  Hits                    ?    14819           
  Misses                  ?     3058           
  Partials                ?        0           

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[kkraus14]

@gpucibot merge