Remove maven-antrun-plugin

[ctubbsii]

Replace maven-antrun-plugin with better alternatives:

• Use build-helper-maven-plugin for keeping versions up-to-date in cclient code
• Use build-helper-maven-plugin for retrieving hostname
• Use Maven native env.* properties instead of antrun
• Simplify maven-release-plugin to remove extra commit (versions should already be up-to-date from previous SNAPSHOT builds during development)
• Use exec-maven-plugin for calling make
• Use maven-resources-plugin for creating empty working directory
• Use maven-resources-plugin for injecting the version into the cclient files (without the -SNAPSHOT suffix)
• [BUGFIX] Fixes the incorrect pattern matching of version in zookeeper_version.h

Additionally, perform some minor cleanup of modified files:

• Fix xml indentations in modified pom.xml files
• Use ${project.build.directory} property instead of target when possible
• [BUGFIX] Fix some paths that used semi-colons as the path separator and use the OS-dependent path separator

This fixes a few bugs (see above notes).

[ctubbsii]

This change does not tag a specific JIRA issue... there were two bugs fixed in this, as a side-effect of the overall goal. I'm not sure how the ZooKeeper committers prefer to tag something like this.

[ctubbsii]

It looks like the java fail might be related to low memory? It's not clear to me yet. I didn't modify any Java files in this PR.

[ctubbsii]

Also, while the cppunit tests are passing in GitHub Actions, they fail for me locally, always in the same place:

./zookeeper-client/zookeeper-client-c/tests/TestReadOnlyClient.cc:118: Assertion: equality assertion failed [Expected: 0, Actual  : -15]
./zookeeper-client/zookeeper-client-c/tests/TestClient.cc:890: Assertion: equality assertion failed [Expected: 0, Actual  : -15]
Failures !!!
Run: 84   Failure total: 2   Failures: 2   Errors: 0

I'm not sure what the problem could be or how to track down the errors further.