Make type resolution respect semver semantics

[jackgr]

Currently, we require an exact match of the version to resolve chart reference. Instead, we should use semver semantics, meaning that:

• We should prevent breaking changes. For example, a reference to redis:v1,0,0 cannot be satisfied by redis:v2.0.0.
• We should resolve chart references to compatible versions, defined as versions with the same major and minor number, plus higher patch number . For example, a reference to redis:v1.0.0 should resolve to redis:v1.0.1.
• We should take the latest compatible version. For example, if redis:v1.0.1 and redis:v1.0.2 are available, a reference to redis:v1.0.0 should resolve to redis:v1.0.2.