[MacPorts] #58867: bazel*: rename variant to bash_completion

[MacPorts]

#58867: bazel*: rename variant to bash_completion
--------------------+--------------------------
 Reporter:  blair   |      Owner:  RootFunction
     Type:  defect  |     Status:  assigned
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  bazel
--------------------+--------------------------
 It appears that bash_completion is the more standard name:

 {{{
 $ git grep 'variant bash_completion'
 devel/bzr/Portfile:variant bash_completion {
 devel/carthage/Portfile:variant bash_completion {
 devel/docker-machine/Portfile:variant bash_completion {
 devel/docker/Portfile:variant bash_completion {
 devel/google-cloud-sdk/Portfile:variant bash_completion {
 devel/mercurial/Portfile:variant bash_completion {
 devel/redo/Portfile:variant bash_completion {
 java/spring-boot-cli/Portfile:variant bash_completion {
 python/py-django/Portfile:    variant bash_completion {
 www/doctl/Portfile:variant bash_completion {
 www/hugo/Portfile:variant bash_completion {
 }}}

 Versus

 {{{
 $ git grep 'variant bash '
 devel/bazel/Portfile:variant bash description {Enable bash completion
 support} {
 security/pass/Portfile:variant bash description {Include Bash completion
 support} {
 }}}

 Please consider renaming the variant.

-- 
Ticket URL: <https://trac.macports.org/ticket/58867>
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