[MNG-7802][MNG-7803] Fix behaviour of the maven update policy (draft)

[gnodet]

JIRA issue: MNG-7802

After several iterations, this PR simply provides a custom UpdateCheckManager which can implement the desired policy : artifacts are considered immutable once downloaded from a repository. The updatePolicy defined in repositories affect the metadata retrieval only, i.e. checks for LATEST, SNAPSHOT, and more generally all version resolution requests.

This PR also fix the CLI options as part of MNG-7803:

• deprecate -nsu, --no-snapshot-updates and --update-snapshots option
• add -U-/--update-always, -un/--update-never, -ud/--update-daily, -up/--update-policy` CLI options

[cstamas]

Looks good, but: not good, added comment on MNG-7802 intead.

But

• the CLI -U help text should be aligned with reality (is not "snapshot update" but "all update., Change the help text accordingly)
• as IT failures show, IF -U present, do what happened before (stick ALWAYS to session), if not present, do partially what in this PR

Reasoning: This PR makes -U not override anymore the "remembered to fail" of resolver in local repo, as shown in ITs.

"Remembered to fail" when resolver emits Could not resolve dependencies for project org.apache.maven.its.mng4343:test:jar:0.1: The following artifacts could not be resolved: org.apache.maven.its.mng4343:dep:jar:0.1 (absent): org.apache.maven.its.mng4343:dep:jar:0.1 was not found in http://localhost:49378/ during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of maven-core-it has elapsed or updates are forced

[gnodet]

Will update the PR when apache/maven-resolver#297 is released.

[cstamas]

To be done in resolver 2.0.0, please once out upgrade to this instead https://issues.apache.org/jira/browse/MRESOLVER-377